A U.S. federal agency has opened a formal investigation into former Special Counsel Jack Smith, who oversaw two criminal probes into President Donald Trump following his first term in the White House.

An independent watchdog agency responsible for enforcing a law against partisan political activity by federal employees has opened an investigation into Jack Smith, the Justice Department special counsel who brought two criminal cases against then-candidate Donald Trump before his election to the White House last year.

On Thursday, Donald Trump announced sweeping new tariffs against U.S. trading partners that will go into effect next week. The announcement came on the same day that an appeals court grappled with the question of whether Trump’s tariffs are even legal.