A U.S. judge blocked provisions of President Donald Trump's order targeting attorneys at Perkins Coie on Wednesday, saying the legal profession was "watching in horror" at what the law firm was experiencing.

A D.C. federal judge said she will temporarily halt a Trump executive order targeting the law firm Perkins Coie, which represented Hillary Clinton.

At least a couple large law firms are in the process of gathering signatures for an amicus brief in support of Perkins Coie’s lawsuit against the Trump administration, sources say.