Nearly every Republican voted to block a measure that would require that President Trump win authorization from Congress to continue the offensive in the Middle East.
The Oversight Committee took the action over the objections of its Republican chairman, after several G.O.P. members sided with Democrats to insist on it.
The bid came as Representative Tony Gonzales of Texas has been forced into a runoff amid resurfaced allegations of having an extramarital affair with an aide who later took her own life.