Noah Feldman: The guy in the bully pulpit can't be a bully

President Donald Trump can’t carry out his threat to take away the National Football League’s tax-exempt status aimed at making the league force players to stand for the national anthem. That would be a clear violation of the First Amendment.It’s true that the NFL had voluntarily given up its tax break two years ago, which means that Trump’s threat wouldn’t have practical effect even if he could make it stick. But as the Supreme Court recently held, even an effort t