A famous book on negotiation is called “Getting to Yes.” Sometimes, though, the better achievement is arriving at “no.” That’s what Eric Holder and Rand Paul did the other day.

It came in a letter from the attorney general to the Republican senator from Kentucky, which said: “It has come to my attention that you have now asked an additional question: ‘Does the President have the authority to use a weaponized drone to kill an American not engaged in combat on American soil?’ The answer to that question is no.”