A political war on the Hudson erupted Monday over New York Gov. Kathy Hochul and the MTA’s controversial $9 congestion toll. The MTA can begin collecting the first-in-the-nation congestion fee to enter Manhattan south of 60th Street on Jan.

Gov. Phil Murphy’s attorney claims a judge’s ruling this week effectively rescinded key federal approvals for the tolling program.

Manhattan’s congestion pricing program is set to begin Sunday, Jan. 5, following a ruling by a federal court judge in New Jersey — although the parties on either side of the lawsuit involved disagree whether the ruling allows that to happen.