Let me put things more starkly: Under current precedent, the commander in chief can give a secret order to kill an American citizen with a drone strike without charges or trial.

Should Donald Trump have that power?…

Before moving into a new house, parents of small children engage in child-proofing. Before leaving the White House, Obama should engage in tyrant-proofing. For eight years, he has evinced a high opinion of his own ability to exercise power morally, even in situations where Senator Obama thought that the president should be restrained. At this point, better to flatter his ego than to resist it. You’ll be gone soon, Mr. President, and for all our disagreements, I think your successor is highly likely to be less trustworthy and more corruptible than you were.