The main purpose of this legislation is to prohibit the export of crude oil, gasoline, and diesel fuel during military operations against Iran. This is intended to help stabilize domestic fuel prices and ensure that the U.S. has enough fuel supply during a time of potential conflict. Key provisions of the law include a clear ban on exporting these fuels starting from the enactment of the law until military operations against Iran have officially ended and the President certifies that the Strait of Hormuz, a crucial shipping route for oil, is fully open.