President Donald Trump on Thursday signed an executive order targeting Perkins Coie, a prominent Seattle-based law firm that regularly represents Democratic and liberal groups.

The order against the firm, which did work for Democrats during the 2016 campaign, represents an escalation of efforts to punish groups the president sees as aiding his enemies.

U.S. President Donald Trump on Thursday said he would strip Perkins Coie employees of federal security clearances over the law firm's diversity practices and political activities, as he launched a probe into other legal firms.