The U.S. Supreme Court on Tuesday appeared skeptical that a federal crime was committed in the so-called Bridgegate scandal in which aides to then-Gov. Chris Christie of New Jersey were accused of orchestrating a massive traffic jam on the George Washington Bridge for political purposes.

The justices heard arguments in the case Kelly v. United States, the latest in a series of cases in which the high court has examined, and limited, the power of federal prosecutors under certain broad criminal statutes.