Chris Christie this morning used words like "blindsided, sad, and betrayed" to describe his reaction to embarrassing revelations that his aides had a role in shutting down access lanes to the George Washington Bridge last fall. That action, which caused a three-day traffic jam for Fort Lee, was allegedly taken by the New Jersey Governor's top aides in retaliation against the Democratic Mayor of Fort Lee, who failed to endorse Christie for re-election. Today Christie apologized and fired one of his aides. The US Attorney in New Jersey has opened an independent investigation. Alexander Burns is senior political reporter for Politico.