Heinrich XIII Prinz Reuss

Views and conspiracy theories

Many of Reuss's views are consistent with monarchism. He has called for "the revival of the legal structures" that existed before 1918, when the abolition of the monarchy "created so much suffering". He has spoken in favour of low flat tax for all citizens and against debt-based business models hailing the 10 percent rate in the former Principality of Reuss, saying it let Reuss's citizens lead "happy lives" because it was "straightforward and transparent". Reuss contended that the modern German government and European Union were more distant and inaccessible than feudal princes. Reuss also gave speeches claiming that Germany had been a vassal state since the Second World War. At World Web Forum in Zürich in 2019, Reuss gave a speech accusing the Rothschilds and Freemasons of responsibility for the wars of the 20th century, expressing antisemitic conspiracy theories. The speech left attendees "horrified", with some booing or leaving. In 2020, Reuss participated in the celebration of the first International Day of Conscience event in Vienna.

Assault on journalist Peter Hagen

In August 2022, Reuss attended an official reception held by Thomas Weigelt, the mayor of Bad Lobenstein, where Reuss's hunting lodge is located. Weigelt was known to be sympathetic to the Reichsbürger movement and journalist Peter Hagen asked him why someone associated with the Reichsbürger scene like Reuss would be invited to an official event. The next day Hagen approached the mayor at the market festival and tried to film him in familiar conversation with Reuss and AfD-politician Uwe Thrum. Filming the trio led to a violent attack by Weigelt on the journalist, which was captured on film. After injuring the journalist (who had to be treated in hospital) and damaging his equipment, Weigelt refused to resign and was suspended from office. Afterwards, the current head of the Reuss family, , objected to his involvement in local politics "in the strongest possible way". He called Heinrich XIII, his third cousin,

Involvement in 2022 German coup plot

On 7 December 2022, Reuss was arrested at his home in the Westend district of Frankfurt during an extensive raid of alleged far-right conspirators planning a coup d'état. Reuss's hunting lodge in , Thuringia was allegedly the site of weapons stockpiles and meetings regarding the conspiracy. The conspirators allegedly planned to cooperate with Russia, but according to the Federal Prosecutor's Office of Germany, there was nothing to suggest that the Russians "reacted positively to his request." A spokesperson from the Russian Embassy in Berlin denied any involvement. Kremlin spokesman Dmitry Peskov said that it "appears to be a German internal problem". He believes Reuss's anti-government views derive from his resentment at the German judicial system for its failure to recognize his claims to family properties expropriated at the end of World War II. It was still ongoing in December 2025.