President Donald Trump has removed former U.S. Rep. Billy Long as IRS commissioner less than two months after his confirmation, a White House official said Friday.

The official, who was not authorized to speak publicly and spoke on condition of anonymity, did not give a reason for the dismissal. Treasury Secretary Scott Bessent will serve as acting commissioner, the official said.

The Senate confirmed Long on a 53-44 vote despite Democrats’ concerns about the Republican’s past work for a firm that pitched a fraud-ridden coronavirus pandemic-era tax break and about campaign contributions he received after Trump nominated him.

Related | Republican who once tried to abolish the IRS will now run it—into the ground

Before Long’s confirmation, the IRS shuffled through four acting leaders, including one who resigned over a deal between the IRS and the Department of Homeland Security to share immigrants’ tax data with Immigration and Customs Enforcement and another whose appointment led to a fight between Musk and Bessent.

While in Congress, where he served from 2011 to 2023, Long sponsored legislation to get rid of the IRS. A former auctioneer, Long has no background in tax administration.

After leaving Congress to mount an unsuccessful bid for the U.S. Senate, Long worked with a firm that distributed the pandemic-era employee retention tax credit. That tax credit program was eventually shut down after then-IRS Commissioner Daniel Werfel determined that it was fraudulent.

Democrats called for a criminal investigation into Long’s connections to other alleged tax credit loopholes. The lawmakers allege that firms connected to Long duped investors into spending millions of dollars to purchase fake tax credits.