As the war in Iran pushes U.S. gas prices toward $4 a gallon nationally, some lawmakers are pushing to suspend the federal gasoline tax in the latest attempt to try to control surging energy costs.

Lawmakers say the action would provide much-needed relief for families and businesses that rely on their cars and trucks to get to work and school and run everyday errands.

Asked about the gas tax at a Cabinet meeting Thursday, Donald Trump said he has “thought about” suspending it but suggested states should consider suspending their fuel taxes.