Setting aside the Ukraine bribery/coercion issue, for a moment, and ignoring the ongoing complete failure of either this administration's following security protocols even somewhat or the GOP-controlled Senate's keeping even the pretense of consistency on the topic...
If, as seems increasingly likely it is demonstrated that President Trump lied in his sworn statement to then-Special Prosecutor Mueller, that sure sounds like the equivalent in action (lying in a federal investigation) to what Bliil Clinton was ultimately nailed for when they impeached him.
And over a far more serious issue, vis-a-vis federal safety/security and Putin's boys vs. a White House intern. What then?! Will any of the Senate GOP members illustrate integrity and vote to convict Trump if he is demonstrably guilty?