The president’s insatiable need to traffic in rumor and conspiracy blows larger holes in our shared reality with each passing day.

Donald Trump says his predecessor committed the “greatest crime in American political history.” So why can’t he explain what it is?

Trump spent five years trying to delegitimize Obama. Now he's taking office under a cloud of suspicion, and only has himself to blame.

This is an emergency, and Americans need to be prepared for it.

He's maximizing the number of voters who'll reject the results of the election, with potentially calamitous consequences.