Dan Bongino, a former US Secret Service agent who has written bestselling books, run unsuccessfully for office and gained fame as a conservative pundit with TV shows and a popular podcast, has been chosen to serve as the FBI’s deputy director.

President Donald Trump announced the appointment on Sunday night in a post on his Truth Social platform, praising Bongino as “a man of incredible love and passion for our country”. He called the announcement “great news for law enforcement and American justice”.

The selection places two staunch Trump allies atop the nation’s principal federal law enforcement agency at a time when Democrats are concerned that the president could seek to target his adversaries. Bongino would serve under Kash Patel, who was sworn in as FBI director at the White House on Friday and who has signalled his intent to reshape the bureau, including by relocating hundreds of employees from its Washington headquarters and placing greater emphasis on the FBI’s traditional crime-fighting duties.

Patel has declined to explicitly say whether he would use his position to pursue Trump’s political opponents.

The deputy director serves as the FBI’s second-in-command and is traditionally a career agent responsible for the bureau’s day-to-day law enforcement operations.

Bongino, 49, served on the presidential details for then-presidents Barack Obama and George W Bush, before becoming a popular rightwing figure. He became one of the leading personalities in the Maga political movement to spread false information about the 2020 election.

For a few years following Rush Limbaugh’s death in 2021, he was chosen for a radio show on the same time slot of the famous commentator.

Bongino worked for the New York police department from 1997 through 1999, before joining the Secret Service. He began doing commentary on Fox News more than a decade ago, and had a Saturday night show with the network from 2021 to 2023. He is now a host of the Dan Bongino Show, one of the most popular podcasts, according to Spotify.

Bongino ran for a US Senate seat in Maryland in 2012 and for congressional seats in 2014 and 2016 in Maryland and Florida, after moving in 2015. He lost all three races.

During an interview last year, Bongino asked Trump to commit to forming a commission to reform the Secret Service, calling it a “failed” agency and criticizing it for the two assassination attempts last year.

“That guy should have been nowhere near you,” Bongino said about the man who authorities say camped outside Trump’s golf course in West Palm Beach, Florida, before he was spotted with a rifle.