More than 500 law firms moved to file an amicus brief on Friday in support of Perkins Coie's lawsuit against the Trump administration's executive order that targeted the firm over its representation of Hillary Clinton's 2016 campaign. "The Executive Order at issue in this case, and the others like it, take direct aim at several of the Nation's leading law firms and seek to cow every other firm, large and small, into submission," the amicus brief says. "The looming threat posed by the Executive Order at issue in this case and the others like it is not lost on anyone...