Massachusetts Sen. Elizabeth Warren, seizing on an explosive op-ed from an anonymous administration official, said Thursday that it's time to use constitutional powers to remove President Donald Trump office if top officials don't think he can do the job. "If senior administration officials think the President of the United States is not able to do his job, then they should invoke the 25th Amendment," Warren told CNN. "The Constitution provides for a procedure whenever the Vice President and senior officials think the President can't do his job. It does not provide that senior officials go around the President -- take...