Obama had (and to some degree still has) tremendous power to implement the details of such a plan. So a successful defense will require the usage of the same.
Our side can control impeachment by controlling the GOP thru the people. People pleased = Congress falls in line. $$$ = Congress falls in line.
Trump can use the Presidency to in the same manner as Obama did. You simply have to make it clearly better for the Dems to be “healthy opposition” in lieu of subversives. You do this with money, investigations, and surveillance.
Impeachment is not a viable option
The only option for both sides is real in the ground death
The fact the battle is in progress is proof of the failure of the American system. The tried and historically true is the recourse and that is death of the opposition