Republicans see no reason to impeach.
Let's be honest, the Donald would have to be revealed as a deeply-undercover KGB and then FIS agent over 30 years, and even then, perhaps not.
Democrats must be sniggering in private. Impeachment cannot be their desired endgame. They'd end up with Pence or even Ryan in the Oval Office and the likelihood of three years of GOP control of all branches of government, under a visibly saner and perhaps even semi-competent administration. They can't want that.
Trump's lawyer speaks of 'lifting the cloud'. Not going to happen. The cloud is the Democrats' key play right now, at least until the mid-terms.