IRS Supervisory Special Agent Gary Shapley, whose whistleblower testimony was pivotal to House Republicans’ corruption investigation into Hunter Biden, was named the agency’s next acting commissioner. 

Shapley, who has been fiercely critical of the IRS, will lead the agency until former Republican Rep. Billy Long, President Donald Trump’s pick to lead the agency permanently, is confirmed by the Senate, according to the Wall Street Journal.  The move comes as the IRS goes through a massive restructuring under the Trump administration due to recommendations made by Elon Musk’s Department of Government Efficiency, including layoffs of thousands of workers to downsize the agency.