(Evan Vucci | The Associated Press) In this Monday, Oct. 23, 2017, file photo, President Donald Trump speaks during a meeting in the Oval Office of the White House in Washington. Trump is unleashing new criticism of the probes into possible ties between his campaign associates and Russia. Trump, in a series of tweets, is making reference to what he calls "phony Trump/Russia ‘collusion,’ which doesn’t exist." He says Democrats are using a “witch hunt” for “evil politics.”