Congestion pricing debuted Jan. 5. The plan, which survived legal challenges from Rockland and Orange counties as well as the state of New Jersey, tolls drivers who enter Manhattan at 60 th Street and below during peak hours $9.

Duffy did not give a time frame for trying to shut down congestion pricing, saying only that federal officials would contact the state to "discuss the orderly cessation of toll operations." MTA CEO Janno Lieber said tolling would "continue notwithstanding this baseless effort to snatch those benefits away."

The decision kicked off a battle with New York officials, who say the program will continue.