Biography.guide
Home › People › Lawyer › Kevin McAleenan
Portrait of Kevin McAleenan

Kevin McAleenan

b. 1971

Former Acting Secretary of Homeland Security

Don't just read it — keep itBiographies to ownE-book · Audio · Video From $7 →

About Kevin McAleenan

Born 1971. Kevin McAleenan is an American lawyer.

Kevin Kealoha McAleenan (born September 5, 1971) is an American attorney and government official who served as the acting United States secretary of homeland security from April to November 2019.

McAleenan served as the U.S. Customs and Border Protection commissioner from March 2018 to May 2019. During that time, he was a leading proponent of separating children from their parents as a means of deterring illegal entry into the United States. The Government Accountability Office later ruled that McAleenan's appointment as Acting Secretary had been improper.

McAleenan is the CEO and former president of BigBear.ai which holds multiple contracts with the United States Department of Defense.

Early life Kevin McAleenan was born on September 5, 1971, in Honolulu, Hawaii, to a mother of Finnish descent and a father of Irish descent. He received an undergraduate degree from Amherst College. He then received a J.D. degree from the University of Chicago Law School and practiced law in the state of California, initially at Sheppard, Mullin, Richter & Hampton and subsequently at Gunderson Dettmer.

Early career

McAleenan practiced law in the private sector from 1998 until 2001, when terrorist attacks that September motivated him to apply to work for the FBI. He was recruited to help start up the new CBP Office of Antiterrorism, eventually becoming its executive director. During his time as the port director of LAX, he was responsible for the security operations for that airport as well as 17 other airport facilities. In this position he was in charge of airport operations and responsible for securing the US border while ensuring lawful trade and travel at 329 ports of entry in the United States, as well as 70 locations in more than 40 countries.

President Donald Trump nominated McAleenan to assume the position of commissioner in a permanent capacity in May 2017. McAleenan's previous nomination was supported by officials from both the George W. Bush and the Barack Obama administrations, a number of whom signed a letter to Congress expressing "enthusiastic support" for the "supremely qualified" McAleenan. Trump officially submitted the nomination to the Senate on May 22. The Senate confirmed McAleenan's nomination on March 19, 2018, by a vote of 77–19. He was sworn in on March 20, 2018.

Tenure McAleenan advocated for the implementation of the Trump administration's "Zero Tolerance" policy on immigration, including the prosecution of parents and the separation of children from their families. According to fifteen of his colleagues, he was one of the most vocal proponents of the policy within the administration. In April 2018, he issued a memorandum calling on Kirstjen Nielsen to begin enacting the policy, in spite of the fact that Nielsen believed that Border Patrol was not prepared to implement it.

In August 2018, McAleenan was interviewed by The New York Times and said he was aware that it is illegal to detain families longer than 90 days. He also said he felt Trump's executive order was an "important recalibration" and that "well-intended efforts are not going to succeed if they lose public interest." McAleenan supports U.S. Immigration and Customs Enforcement, saying it does "critical work." He has said that there is no intent for indefinite or permanent family separation, and acknowledged that the CBP's job is to enforce the law.

On June 11, 2019, McAleenan testified before the Senate Judiciary Committee that the "Zero Tolerance policy lasted six weeks." Subsequently released records from the Department of Health and Human Services (HHS) indicate separations began in February 2018 and continued into March 2019.

On June 28, 2019, McAleenan criticized media reports of conditions for detained migrants at the United States-Mexico border. He claimed that, contrary to reports, detained children had "appropriate meals" and "showers as soon as they can be provided." But a July 2, 2019 Department of Homeland Security Office of Inspector General report found that some detention facilities in Rio Grande Valley had violated CBP standards by not granting children access to showers or hot meals.

Acting U.S. Secretary of Homeland Security McAleenan being questioned by US Senator Kamala Harris during his March 2019 testimony at the United States Senate. President Trump designated McAleenan as Acting United States Secretary of Homeland Security on April 8, 2019, following Kirstjen Nielsen's resignation.

McAleenan resigned from the post on October 11, 2019. Trump announced McAleenan's departure on Twitter, saying that McAleenan wanted to "spend more time with his family and go to the private sector." CNN reported that White House officials tried to talk him out of resigning, but McAleenan felt he had accomplished all he could as acting secretary. Trump also announced that he would name McAleenan's successor the following week;

At the time, Alan Bersin, a former assistant Homeland Security secretary for international affairs and former Customs and Border Protection Commissioner who had worked closely with McAleenan, opined that he did his job effectively as a professional public servant in three administrations, Republican and Democrat, but his undoing had been the polarizing environment and a lack of White House support.

Ten months later, on August 14, 2020, the Government Accountability Office released a finding that "upon the resignation of Secretary Kirstjen Nielsen, the express terms of the then existing designation required the Director of the Cybersecurity and Infrastructure Security Agency (CISA) to assume that title instead of the Commissioner of Customs and Border Protection (CBP), Kevin McAleenan." The official who should have been Acting Secretary at the time of Nielsen's resignation is Director of the Cybersecurity and Infrastructure Security Agency Christopher C. Krebs. This finding also meant that McAleenan's successor Chad Wolf and his Deputy Acting Secretary Ken Cuccinelli did not appropriately obtain their positions.

Awards In 2005, McAleenan received the Service to America Medal, Call to Service Award for his leadership and help in developing and implementing a comprehensive anti-terrorism strategy for border security after September 11, 2001. In 2015, McAleenan was awarded the Presidential Rank Award, the highest civil service award in the United States.

Biography shop

Don’t just read it —
keep it.

Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.

  • E-book
  • Audio
  • Video
Browse the shop — from $7

Instant download · yours to keep · every purchase keeps this site free

Important facts

Birth century
Occupation
Nationality
Education
University of Chicago Law School, Amherst College, University of Chicago
Positions held
United States Secretary of Homeland Security
Employers
United States Department of Homeland Security
Awards
Presidential Rank Awards; Samuel J. Heyman Service to America Medals
Also known as
Kevin K. McAleenan, Kevin Kealoha McAleenan

People in Kevin McAleenan's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Kevin McAleenan's

Frequently asked questions

Who is Kevin McAleenan?

former Acting Secretary of Homeland Security

When was Kevin McAleenan born?

Kevin McAleenan was born on 5 September 1971 in Honolulu.

What is Kevin McAleenan's occupation?

Kevin McAleenan is a lawyer.

What nationality is Kevin McAleenan?

Kevin McAleenan is American.

Sources & further reading

· Wikipedia: Kevin McAleenan

· Wikidata: Q30122656

· DBpedia: Kevin McAleenan

Cite this page

APA: Biography.guide. (2026). Kevin McAleenan. https://biography.guide/kevin-mcaleenan/

MLA: "Kevin McAleenan." Biography.guide, https://biography.guide/kevin-mcaleenan/.

Chicago: "Kevin McAleenan." Biography.guide. https://biography.guide/kevin-mcaleenan/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

Page generated 2026-09-27 05:27 UTC