As Donald Trump flew to Texas Thursday for a fundraiser and rally, the revelations about the President’s involvement in Ukraine escalated into a full-fledged crisis. Mick Mulvaney, the acting White House chief of staff, undercut the President’s denial of a quid pro quo when he told reporters that Trump withheld military aid as leverage to push Ukraine to investigate Democrats’ activity during the 2016 election—and then reversed himself hours later.