Alan Peter Cayetano

Early life and education Alan Peter Schramm Cayetano was born in Mandaluyong on October 28, 1970 to Filipino lawyer Renato "Compañero" Cayetano and kindergarten teacher Sandra Schramm, an American of German ethnicity from Michigan. He was raised in Parañaque and moved to Taguig in 1991. Although he inherited United States citizenship by descent, he relinquished his U.S. citizenship in 1998, which was formally granted in 1999.

Cayetano resides with his family in Bagumbayan, Taguig. His wife, Lani, is the incumbent mayor of Taguig and formerly represented the first and second districts of Taguig–Pateros at the House of Representatives of the Philippines. His older sister, Pia, is an incumbent Senator and formerly represented the second district of Taguig at the House of Representatives of the Philippines, where she was also a Deputy Speaker. His youngest brother, Lino, is a film and television director as well as a former congressman and mayor of Taguig, while his other brother Ren is a former councilor of Muntinlupa. The Cayetano family is considered one of the Philippines' political dynasties.

In the 1980s, Cayetano admitted to having nearly been expelled from high school at the De La Salle Santiago Zobel School in Muntinlupa due to him regularly joining his father Rene at the Batasang Pambansa instead of attending class.

In college, he studied political science at the University of the Philippines Diliman and graduated in 1993. He was an elected member of the UP Diliman University Student Council. On September 17, 1990, Cayetano and other UP students attended a rally organized in front of the US Embassy in Ermita, Manila, expressing opposition to the presence of American bases in the Philippines during the visit of American diplomat Richard Armitage. According to eyewitnesses, when the students were violently dispersed with tear gas by the Western Police District and detained, Cayetano's first lines to a police officer was stating that he was the son of politician Rene Cayetano, after which he and fellow councilor Roby Alampay were released from police custody.

He later finished his Juris Doctor degree from the Ateneo de Manila University School of Law in 1997, graduating 2nd Honors (silver medalist). Thereafter, he was admitted to the Philippine bar in 1998.

Early career

Councilor of Taguig (1992–1995) Cayetano, then a junior year college student at University of the Philippines, was elected as councilor of the then-municipality of Taguig in 1992. Elected at the age of 21, he was the youngest elected councilor in the country in 1992,

Vice mayor of Taguig (1998) Cayetano was elected vice mayor of Taguig in the 1995 local elections, but was only proclaimed on June 20, 1998, ten days before the end of his term, due to contentious electoral disputes with his opponent Loida Labao-Alzona, a former mayoral candidate in 1992. The two eventually reconciled with each other, with Cayetano inviting Labao-Alzona to be godmother at his wedding with Lani in 2004. According to Cayetano's profile in the book Senate Memento 2013, the three-year electoral dispute was when Cayetano "realized that his political detractors would spare nothing to stop him in his advocacy for good governance."

By September 6, 2006, first gentleman Arroyo, his brother Rep. Ignacio Arroyo, and his sons Diosdado and Rep. Mikey Arroyo filed a complaint before the House Ethics Committee seeking Cayetano's expulsion from Congress for fabricating evidence and engaging in "improper conduct". By November 21, 2006, Cayetano issued his own complaint against Reps. Ignacio and Mikey Arroyo that sought their expulsion, accusing them of receiving monthly payola that amounts to "graft and corruption". Although the committee, as chaired by Bohol Rep. Roberto Cajes, found Arroyo's complaint to have "substantial and credible evidence" against Cayetano, the congressman's expulsion did not come to fruition.

Senate (2007–2017)

Cayetano ran for senator in 2007 under the Genuine Opposition coalition and won, placing ninth among of the 12 winning candidates. He was elected Senate Minority Leader for the 15th Congress in 2010.

Cayetano was the second richest among six senators running for reelection in 2013. He and the Nacionalista Party received ₱87.7 million in campaign donations from Manny Villar and family. Cayetano was among the top 10 in ad spending among all candidates, having spent ₱74.49 million for his advertisements. He was re-elected to the Senate in 2013, running under the Team PNoy administration coalition.

At the start of the 16th Congress in 2013, Cayetano was elected as the new Senate Majority Floor Leader and was likewise appointed to chair the Senate Committee on Rules. He had participated in hearings probing the corruption allegations thrown against then-Vice President Jejomar Binay.

Pork barrel scam and campaign donations During the height of the pork barrel scam in mid 2013, Janet Lim-Napoles in her affidavit included Cayetano's name in her list of lawmakers whom she worked with. Napoles claimed that the agent who liaised with Cayetano was a certain "Tito Boy" who claims to be an uncle of Cayetano. Napoles however said that the initial payment to Tito Boy was returned since they could not meet Cayetano's higher demand. Cayetano's name also appeared in Sen. Ping Lacson, and Justice Secretary Leila De Lima's List. Napoles claimed meeting Cayetano at his sister's restaurant Slice in Bonifacio Global City in Taguig, where she handed him personally a campaign donation.

Cayetano denied ever meeting Napoles or receiving kickback money from her. He confirmed however knowing "Tito Boy," but said that he was not in the country and was not involved in the pork barrel.

Senators Alan Peter Cayetano and Pia Cayetano channeled a large amount of their pork barrel funds to Taguig City where Alan Peter Cayetano's spouse Lani was serving as mayor. In August 2014, Alan Peter Cayetano was charged with graft over alleged irregularities with the spending of his pork barrel from 2007 to 2009, during which there was an alleged "inordinate increase" in his net worth.

Alan Peter Cayetano and Lani Cayetano were also charged with graft for the purchase of 18 allegedly overpriced multicabs, bought at ₱498,000 each.

Alan Peter and Pia Cayetano were the biggest pork spenders in the Senate, having spent ₱256,700,000 and ₱277,006,092 of their pork barrel in 2012.

Oplan Stop Nognog 2016 In February 2016, the lawyer of Vice President Jejomar Binay disclosed to the media that Cayetano, along with Senator Antonio Trillanes IV, Caloocan Representative Edgar Erice, Vince Dizon, Ronald Llamas, Hernani Braganza, along with businessmen Enrico Gutierrez of SR Metals, and Salvador Zamora of Nickel Asia were engaging in discreet meetings that aimed to derail his 2016 presidential campaign dubbed as Oplan Stop Nognog. Nognog is a cartoon character popularized during the 1960 and 1970s, and it has become a pejorative towards dark skinned individuals. Trillanes and Cayetano had previously led the 25 hearings of the Blue Ribbon Committee on the wealth and assets of Binay.

Cayetano called the accusation a figment of Binay's imagination.

2016 vice presidential campaign

In a press event held in Davao City, Senator Cayetano announced that he would seek election for vice president in the 2016 national elections under the Nacionalista Party, but did not mention who would be his presidential running mate. On November 21, 2015, it was made official that Davao City mayor Rodrigo Duterte would be his running mate for the 2016 presidential elections.

Cayetano donated more than ₱71 million to Duterte's campaign, placing him among Duterte's top donors, and spent ₱199,872.42 for his own campaign. Election watchdog Legal Network for Truthful Elections (LENTE) flagged the amount, noting that Cayetano's salary is less than half a million a month.

Although Duterte won the presidency, Cayetano lost to then-congresswoman Leni Robredo, placing third in both unofficial and official vote counts conducted by COMELEC and the Congress, respectively.

2016 election squabble During the launch of the Duterte-Cayetano at Tondo, Manila, Cayetano's staff were accused by the senatoriable candidates of the camp, Sandra Cam, Greco Belgica, Gen. Dionisio Santiago (Ret.), Rafael Alunan III, and Ding Diaz, of blocking their opportunity to go to the platform and hold their own speeches.

Secretary of foreign affairs (2017–2018)

Appointment On May 10, 2017, President Rodrigo Duterte announced that he appointed as Cayetano as secretary of foreign affairs, following the expiration of the one-year appointment ban on losing candidates of the 2016 elections. Cayetano replaced acting secretary Enrique Manalo, who assumed the post in March 2017 when the Commission on Appointments's (CA) rejected President Duterte's ad interim appointment of Perfecto Yasay Jr. due to the latter's citizenship concerns.

His appointment to the post by President Duterte was approved by the CA's foreign affairs committee on May 17, 2017. Upon approval of the CA's plenary, he assumed the post as foreign secretary and effectively resigned from his post as senator. On May 18, Cayetano was sworn in by President Duterte at the Malacañang of the South in Davao City.

Territorial disputes Cayetano described his approach in resolving the territorial disputes of the Philippines, as "objective-based", describing the process as negotiation through the use of historical facts, such as the Treaty of Paris of 1898 and the United Nations Convention on the Law of the Sea, to defend the Philippines' claims. He also vowed to avoid "microphone diplomacy", which he defined as the continual issuing of public statements instead of privately negotiating the issues with the parties.

In January 2018, Magdalo Party-List Representative Gary Alejano revealed that Cayetano had approved the Chinese Institute of Oceanology of the Chinese Academy of Sciences to perform a scientific survey of the Philippine Rise, while disapproving a French research offer in the Rise. Under the agreement, majority of researchers must be Chinese. On the same month, China told Filipino counterparts that the Philippines has no right in the Philippine Rise. Filipino President Rodrigo Duterte's trusted spokesperson Harry Roque embraced and defended China's statement, causing outrage from various Filipino sectors.

In March 2018, Cayetano reiterated that the West Philippine Sea is "disputed", despite a 2016 decision by an international court backed by the United Nations declaring that the Philippines has the sole legal right on the resources of the West Philippine Sea, and which also deemed the Philippines as the internationally acknowledged country with jurisdiction on the area. thumb Cayetano meets with U.S. Secretary of State Mike Pompeo during the former's visit to the U.S. State Department in Washington D.C., June 21, 2018 Cayetano cited the continued conflict over territories, specifically islands, which are not covered by the ruling under the United Nations Convention on the Law of the Sea. Cayetano took the stance that acknowledging the dispute was resolved by the 2016 ruling is not equal to giving up Philippine claims on the territory.

Drug war In July 2016, Cayetano defended drug war killings in an interview with CNN's Christiane Amanpour.

In August 2016, Cayetano presented statistics meant to show that murder and homicide had dropped during Duterte's drug war. However, his graph was statistically flawed and did not accurately depict comparisons with previous periods. His figures were also inconsistent with those presented by police chief Ronald dela Rosa.

In May 2017, Cayetano defended the drug war before the United Nations Human Rights Council, drawing criticism from human rights workers.

On October 6, 2017, Cayetano was interviewed by British journalist Mehdi Hasan on Al Jazeera. When Hasan asked Cayetano if the 3,800 people killed during police operations were drug pushers, Cayetano answered yes. Mehdi questioned how Cayetano came to that conclusion when the murdered individuals were never given a fair trial. Cayetano responded by claiming police officers responded in self-defense to the alleged drug pushers threatening the officers with guns.

Cayetano on multiple occasions made false claims regarding the definition and origin of the term "extrajudicial killings" and was subject to fact checking by Philippine Star and Vera Files.

Human Rights Watch called Cayetano Duterte's "Denier-in-Chief" as he rejected the report on the Philippines by the United Nations' Universal Periodic Review (UPR) on Duterte administration's human rights record, and the government-sponsored mass killings of its own citizens. Cayetano would call the report "disinformation" and fake news. Cayetano also added that foreign organizations have no right to interfere in Philippine affairs, since the issue tackles Philippine sovereignty.

Cayetano said in 2018 that human rights activists were the "unwitting tools" of drug lords, drawing criticism from Karapatan and other human rights groups. Bayan Muna Representative Carlos Isagani Zarate said that the Duterte government makes pronouncements without evidence, calling out the drug war and the thousands that have been killed.

In 2026, Senate President Alan Peter Cayetano drew criticism from human rights organizations for describing Deterte's drug war as a "pro-life campaign". Karapatan stated how the drug war terrorized poor communities and encouraged extrajudicial killings.

2019 midterm elections On October 9, 2018, President Duterte announced that Cayetano had planned to run in the May 2019 elections. He eventually resigned as foreign affairs secretary on October 17, the last day of filing of certificates of candidacies. He was succeeded by former Permanent Representative of the Philippines to the United Nations Teodoro Locsin Jr. as foreign affairs secretary on the same day. Cayetano and his wife, Lani, both filed to run for representative in the first and second districts of Taguig–Pateros, respectively

Residency dispute The COMELEC received separate petitions to disqualify the Cayetano couple due to residency issues. Cayetano indicated in his Certificate of Candidacy that his residency is Barangay Bagumbayan, while his wife indicated she was a resident of Barangay Fort Bonifacio. The petitioners argued the information they supplied violated Article 68 and 69 of the Family Code. Petitioner Leonides Buac Jr. claimed that the condominium unit indicated by Lani Cayetano was not owned by her or her husband, but that this was under the name of Lino Cayetano. Incidentally, the said unit in Two Serendra was also listed as the domicile of Pia Cayetano.

The case was later dismissed on May 7, 2019, less than a week before the election. The couple later won election to both of their contested seats.

Speaker of the House (2019–2020)

Election

On the first day of the 18th Congress of the Philippines, Cayetano was elected House Speaker after gaining 266 votes against Manila Representative Benny Abante, who garnered 28 votes. Cayetano became the 22nd Speaker of the House of Representatives of the Republic of the Philippines on July 22, 2019. He was nominated by Representatives Lord Allan Velasco, Martin Romualdez and presidential son Rep. Paolo Duterte. These three representatives also announced their intention to run for speaker, but President Rodrigo Duterte gave his endorsement to Cayetano.

Cayetano agreed to share his term with Marinduque Representative Lord Allan Velasco, while the Leyte Representative Martin Romualdez, who was among the contenders for the office, agreed to become majority floor leader. The term-sharing agreement was reportedly influenced by President Duterte.

Under the term-sharing agreement, Cayetano served for 15 months and was followed by Velasco in the remaining months of the 18th Congress of the Philippines.

On September 2, the House designated him as the legislative caretaker of Camarines Sur's 1st district after Representative Marissa Andaya died of cancer on July 5. On October 16, four days after he resigned as Speaker, the caretaker position was taken over by Michael John Duavit (Rizal–1st).

SEA Games, cauldron controversy, and COVID-19 response

With approval from President Duterte, a budget of ₱7.5 billion for hosting the 2019 SEA Games was initially inserted in the proposed budget of the Department of Foreign Affairs under Cayetano, even though sports development was not part of the department's mandate or expertise. The SEA Games fund was reassigned to the Philippine Sports Commission, though it was controlled by Philippine SEA Games Organizing Committee (PHISGOC), a private organization chaired by Cayetano and tasked to organize the 2019 SEA Games. Part of the fund was exempt from government procurement laws and public bidding requirements. Cayetano's chairmanship of PHISGOC was questioned on the basis of constitutionality and delicadeza or sense of propriety. President Rodrigo Duterte expressed belief that there was no corruption involved in building the cauldron. In September 2021, Cayetano asserted that the cauldron was wholly funded by the private sector adding that corruption allegations regarding the cauldron caused some sponsors of the games to withdraw.

As of October 2020, PHISGOC chaired by Cayetano had ₱387 million in unpaid obligations to SEA Games suppliers. The Philippine Olympic Committee sued PHISGOC for failing to file audited financial reports on time. President Rodrigo Duterte cleared Cayetano of any wrongdoing before the Presidential Anti-Corruption Commission could begin it investigation. In 2026, the National Bureau of Investigation launched an investigation about the 2019 SEA Games for alleged irregularities.

After the COVID-19 pandemic began, the SEA Games facilities were quickly converted into quarantine facilities a mere four months after the games concluded. Cayetano was appointed as chairperson of the Defeat COVID-19 Ad Hoc Committee during the early months of the COVID-19 pandemic; during his tenure, the Philippines was ranked last in the Bloomberg Covid Resilience Ranking for September 2021, indicating that the country carried out the worst pandemic government response in the world among the 53 countries ranked.

In 2020, investigations were sought by senator Risa Hontiveros regarding the P9.5 billion in taxpayer money used to construct the main sports venue inside New Clark City, which has been flagged previously, along with a cauldron worth P50 million, by independent media investigations. However, the Senate investigation was blocked by Alan's sister Pia. Later in 2026, the National Bureau of Investigation led a probe for alleged irregularities related to the 2019 SEA Games.

ABS-CBN franchise renewal controversy In May 2020, a number of lawmakers blamed Cayetano for the shutdown of ABS-CBN broadcasting due to his inaction on numerous bills seeking to renew the station's franchise. Cayetano pointed to Solicitor General Jose Calida and the National Telecommunications Commission (under the leadership of Gamaliel Cordoba) for ABS-CBN's subsequent closure, stating "the NTC appears to have succumbed to pressure from the Solicitor General and issued a cease and desist order to ABS-CBN." He warned, "as for the sudden flip-flopping of the NTC and the unconstitutional meddling by the Solicitor General in the business of Congress, I promise you, there will be a reckoning." In July 2020, ABS-CBN's attempt to renew the franchise was rejected by the Philippine House Committee on Legislative Franchises of the 18th Congress, which voted 70–11 to deny the application citing political reasons and several issues on the network's franchise. The denial of the ABS-CBN's franchise resulted in a massive retrenchment of its workers, permanent closure of the operations of numerous businesses, and network transfers and resignations by numerous talents, anchors and reporters. Cayetano and his allies were praised by Solicitor General Calida who claimed victory in silencing ABS-CBN.

In September 2020, Cayetano slammed the European Parliament's resolution urging to grant ABS-CBN a broadcast license because of its "outright interference" in Philippine affairs, claiming that the European Parliament criticized the Philippine government without first asking questions or ascertaining facts.

In his interview for "Hard Talk" with Boy Abunda, Cayetano stated that "if it were up to me, ABS-CBN would have been granted a provisional authority valid until October 31, 2020, to give the body more time to deliberate." The provisional authority was based on HB 6732, which Congressman Cayetano filed on May 13, 2020. President Rodrigo Duterte also admitted to using his "presidential powers" to shut down ABS-CBN and deny the renewal of franchise.

House leadership crisis and resignation, BTS sa Kongreso

Cayetano tendered his irrevocable resignation as House Speaker on October 13, 2020, paving the way for Marinduque representative Lord Allan Velasco to assume his position undisputed.

In January 2021, Cayetano formed a new bloc named "BTS sa Kongreso" — short for Balik sa Tamang Serbisyo sa Kongreso — along with fellow lawmakers Mike Defensor, LRay Villafuerte, Dan Fernandez, Raneo Abu, and Jose Antonio Sy-Alvarado.

In late March 2021, Cayetano launched two early political paid advertisements of himself which aired on all major Philippine television networks. One is on the campaign to approve a bill to give cash aid to every Filipino family, while the other one portrayed Cayetano as an "ideal public servant."

10K Ayuda Bill and initiative Amid the COVID-19 pandemic, Cayetano and his allies from the BTS bloc filed in February 2021 House Bill 8597 otherwise known as the "10K Ayuda Bill". The measure seeks to provide each Filipino family with a one-time assistance or per family member, whichever is higher, which they can use for their daily needs or to start their own businesses as they await the full roll-out of COVID-19 vaccines.

In an attempt to prove that the government has the capacity to provide a cash assistance to every Filipino family, Cayetano launched the Sampung Libong Pag-asa (SLP) program on his Facebook page in May. Through pooled resources from the BTS members and other private donors, the SLP initiative was held almost daily, reaching out to beneficiaries from different sectors across the country. In its daily program via Facebook live, SLP highlights the stories of beneficiaries who said the amount they received helped them rise up from the hardships they encountered when the country was placed under community quarantine. Four months after launching the program, the SLP reached 10,000 beneficiaries nationwide on September 10, 2021.

Sari-Saring Pag-asa Cayetano introduced the Sari-Saring Pag-asa (SSP) program, which aims to provide struggling sari-sari store owners with a one-time cash assistance to replenish their supplies amid the pandemic. An advocate of small to medium enterprise empowerment, to provide financial assistance and livelihood training for sari-sari store owners in Taguig and Pateros. The local initiative was later expanded into the Sari-Sari Store Community, a national program that sought to create a community of sharing and mutual aid among sari-sari store owners from different parts of the country. As of October 27, 2021, the SSP has extended aid to a total of 4,811 sari-sari store owners from different parts of the country.

Return to the Senate (2022–present)

Cayetano hinted that he would 'seriously consider' running for President, wherein his focus would be the passage of the "10K Ayuda Bill" he and his allies from the BTS (Balik sa Tamang Serbisyo) sa Kongreso bloc filed in the lower house. The 10K Ayuda Bill seeks to provide each Filipino household a one-time cash assistance amid the pandemic. He said he intended to draft a five-year economic recovery plan that can be adopted by the presidential candidates. Amid poor showings in presidential surveys, Cayetano was the top spender prior to the official campaign period, having run advertisements worth ₱610.4 million. On October 7, 2021, Cayetano filed his candidacy for senator as an independent candidate.

Cayetano won in the 2022 elections, placing seventh of the 12 winning candidates. Earning his third Senate term, he was the only winning senator not part of any coalitions. In the 19th Congress, he became part of the Senate independent bloc alongside his sister Pia.

In 2023, a Senate resolution to raise the issue of the Philippines' claim to the West Philippine Sea at the United Nations General Assembly was stalled by Cayetano. The resolution's sponsor, Senator Risa Hontiveros, stated that it was not the first time that Cayetano had refused to support the Philippines' claim against China.

20th Congress (July 2025–present) On July 3, 2025, Cayetano filed ten priority bills outlining a legislative agenda focused on strengthening government systems, promoting Filipino values, and supporting families and future generations. Topping the list is the Filipino Values in Identity Act, which aims to institutionalize a national program on values formation through a dedicated Commission on Filipino Values and an Inter-Faith Council.

On September 9, 2025, following leadership changes that saw Tito Sotto replacing Francis Escudero as the Senate President, Cayetano joined the minority bloc and became its floor leader.

Cayetano as a response to the flood control projects controversy proposed the conduct of a snap election and urged President Marcos, Vice President Duterte, and both chambers of the Congress to resign with "no incumbent from the above can run for one election cycle".

Senate presidency (2026)

Election

Cayetano was elected as President of the Senate of the Philippines on May 11, 2026, replacing Tito Sotto after his group staged a controversial ouster plot. His election came after the House of Representatives voted to impeach Vice President Sara Duterte for the second time. Political analysts point out that the Cayetano-led Senate ouster was made to allegedly control the upcoming impeachment trial's narrative.

Two days later, his leadership faced a major crisis during the Senate lockdown, in which chaos and gunfire erupted in an attempt to arrest Senator Ronald dela Rosa by virtue of an International Criminal Court arrest warrant. Cayetano strongly condemned the operation, declaring that the Senate was "under attack" after approximately 27 shots were fired inside the complex.

2026 Senate President controversy and shooting

The Facebook Live of Alan Peter Cayetano, stating that the Senate was "under attack", streamed on May 13, 2026. Official investigations later exposed that the shooting incident was staged, disproving Cayetano's claims On May 13, 2026, the Senate attracted international attention for the first ever shooting incident within the premises of a Senate in recent history. Tensions escalated when gunfire was heard in the Senate during the supposed arrest of Senator Ronald dela Rosa. Later reports confirmed that it was the Office of the Sergeant-at-Arms (OSAA), under the control of Senate President Cayetano and led by Senate sergeant-at-arms Mao Aplasca, who first triggered the shooting incident. It was also confirmed that the OSAA was firing at walls and windows. Analysts viewed the event as a political stunt to divert attention, which later led to the escape of international fugitive and senator Ronald dela Rosa, a member of the Cayetano-led bloc wanted for crimes against humanity by the International Criminal Court.

Prior to the investations, Cayetano initially falsely claimed that the Senate was "under attack" in a Facebook livestream at 20:19 PHT, stating, "We have to turn off the lights dahil may putukan na nangyayari [because there is a shooting happening]." In the same livestream, Cayetano reported that officials were locked in their rooms, but he and other senators in the same room as him agreed not to leave the premises and Dela Rosa. Official investigations later disproved Cayetano's claims, and noted that the Senate was never under attack.

Removal from office Following days of impasse, including Cayetano's refusal to go to work and an allegedly staged shooting incident organized by the Cayetano-led majority to help Senator Ronald dela Rosa escape a warrant of arrest from the International Criminal Court, the minority led by Senator Sherwin Gatchalian successfully ousted Cayetano through the Avelino v. Cuenco ruling and other precedence on June 3, leading to Gatchalian's election as Senate president pro tempore Cayetano's Senate presidency is the second shortest in Philippine history.

On June 17, weeks after his ouster, Cayetano finally conceded the majority to the Gatchalian-led faction.

Post-Senate presidency On July 2026, the National Bureau of Investigation launched a probe on the flood control projects associated with Cayetano, as well as his role during the controversial 2019 SEA Games where billions of pesos were involved. During the investigations, it was revealed that in 2022 alone, Cayetano's flood control projects were given to the top 15 anomalous contractors named during the previous flood control controversy investigations. On the same month, senator Panfilo Lacson exposed that Cayetano was involved in multiple anomalous flood control projects in Taguig City, where many of the projects were given two payments for a single project. The documentary photos used for multiple different projects were also revealed to have been just one project. Among the projects identified were a PHP94-million flood control project in Barangay Lower Bicutan implemented by the Department of Public Works and Highways (DPWH), a PHP49.9-million multipurpose building at the Lakeshore Complex reclamation site, a PHP94-million Laguna Lakeshore improvement project, and two flood mitigation rehabilitation projects worth about PHP141.8 million each at Phases 4 and 5, among others. The evidences gathered by Lacson were afterwards submitted to the Ombudsman. Fisherfolk communities in Taguig and Laguna de Bay have lend their support towards the investigations as the illegal reclamation projects of Cayetano have severely affected their livelihoods. Through a middleman, Cayetano afterwards asked Lacson for a "ceasefire", which Lacson ultimately rejected. Prior to the revelations, Cayetano previously claimed that he wanted to investigate anomalous flood control projects in the country himself.

On August 9, 2026, it was exposed that the two Cayetano siblings, Alan and Pia, had billions of budget insertions in 2025. Alan Cayetano's insertions amounted to at least ₱6.7B while Pia's amounted to at least ₱4.7B. The 2025 budget has been named as the most corrupt national budget in Philippine history.

Other ventures Cayetano and his sister Pia also served as the titular hosts of public service program Cayetano in Action with Boy Abunda (CIA with BA), which premiered in February 2023 on GMA Network.

Personal life Cayetano married Maria Laarni "Lani" Lopez in March 2004.

Cayetano is a born-again Christian.

Citizenship On March 8, 2007, former Pateros mayor Jose Capco filed electoral disqualification during the mid-term elections of 2007. Capco presented Cayetano's Alien Certificate of Registration dated March 18, 1976, and a renewed certificate dated January 23, 1985, which Capco claimed Cayetano himself applied for at the Bureau of Immigration. In his complaint, Capco alleged that Cayetano was an American citizen, and that he was disqualified from holding public office in the Philippines. Justice Secretary Raul M. Gonzalez also confirmed that his department records would show Cayetano holding US citizenship.

On April 19, 2007, the Commission on Elections (COMELEC) 2nd Division ruled en banc that Cayetano is a natural-born citizen, as he was born in the Philippines, and that his father is a natural-born Filipino citizen.

Ten years later, on March 16, 2017, Cayetano's citizenship was asked once more by Inquirer columnist and Filipino-American lawyer Rodel Rodis, in response to a Wikipedia list of former US Citizen which included Cayetano and his siblings. Cayetano responded by calling the column a hatchet job, defamation, and fake news. He claimed, "To answer your headline: No I am not an American citizen; I never chose to be an American citizen." A week later Cayetano clarified that he was born Filipino-American holding both citizenship, and he relinquished his American citizenship in 1998.