President Donald Trump on Thursday signed an executive order targeting WilmerHale, marking the latest expansion of the president’s campaign against law firms tied to his political enemies or investigations into his actions.

Trump is suspending security clearances for WilmerHale employees, restricting its access to federal buildings and ending government contracts that involve the law firm. The president has used similar directives against Jenner and Block, Perkins Coie and Covington & Burling. He rescinded an order targeting Paul Weiss after the firm agreed to dedicate $40 million in pro bono legal services during Trump’s term to support his administration’s goals.