For six years: “The President was responsible for F&F/Benghazi/IRS because he’s the guy in charge and everything his underlings do comes back to him! The buck stops at the White House!”

Today: “Christie has been exonerated and any efforts to portray him as responsible for Bridgegate is ludicrous! He says he had no idea what was going on!”

Apparently the Christie defense is the Reagan defense: “I had no earthly idea what the appointees that I totally trusted were up to! They lied to me!”