The greatest danger of Donald Trump’s presidency is that seemingly abnormal things become seen as normal.

… like impeachment?

It’s a tough situation: don’t do anything and let extraordinary circumstances become the ordinary or take extraordinary measures and risk their normalization. Or do you think the next Democratic President isn’t going to face congressional impeachment hearings whenever he or she sneezes?

Politics is broken. The Republicans broke it. Newt Gingrich broke it. Mitch McConnel is stomping on the remaining shards of it.