Generally, I agree that the Democrats are prone to keep feeding the monster vs ignoring him.
Pelosi has wisely taken the latter course. Democrats won the House back in convincing fashion in 2018 on a platform of kitchen table issues. Many say that is the winning formula for 2020. Don’t make it about Trump. Make it about the voters.
But, an oath is an oath is an oath.
See Washington Post OpEd below authored by 7 freshmen from the 2018 class.