Why is everyone assuming Harris will be president in 2022? IMO she isn't even favored to win the Democratic Nomination, and Trump would Hillary her in the GE.
Trump is gonna be impeached and Trump is losing to her in GE polls.
There's no way 67 senators will vote to remove him, and he could lose the PV by up to 4 points and still win the EC.
You could have said the same thing about Nixon right up until early August 1974 (just a few days before his resignation).
And?
The country was far less polarized in the early 70s, if Watergate happened today there would be enough GOP loyalists in Congress to keep Nixon from being impeached.