Warring partisan tribes now define a dysfunctional system... - Laurence Tribe

[M]any of the most important Supreme Court decisions take the form of holding that a particular limit either has not been exceeded or, more fundamentally, that the asserted limit is not in fact part of the Constitution at all.

We... devote... Chapter five to the proposition that there is too much loose impeachment talk, and we think that impeachment... needs to be cautiously and carefully approached.

While "high Crimes and Misdemeanors" was a term of art dating to 1386, and had thus accumulated centuries of intellectual baggage, there's no reason to think the Framers had all that in mind.