15 April, according to Reuters, two U.S. government officials stated on Tuesday local time that the Trump administration will allow the 30-day sanctions waiver on Iran's maritime oil to expire later this week, as the U.S. currently enforces a blockade on shipments from Iranian ports. This waiver, issued by the U.S. Department of the Treasury on March 20, allows approximately 140 million barrels of oil to enter the global market and eased energy supply pressures during the Iran war. U.S. Treasury Secretary Janet Yellen stated last month that the waiver would expire on April 19. At the time of this announcement, members of both parties in Congress criticized the government for temporarily relaxing sanctions on Iran and Russia amid the ongoing U.S.-Israel conflict with Iran and the Russia-Ukraine conflict. An American official said Washington has multiple tools to target institutions purchasing Iranian oil, including "secondary sanctions." The official added, "Furthermore, with the reinstatement of UN sanctions on Iran, and Iran's past attempts to conceal its illegal activities through seemingly legitimate activities, any transactions with Iran could trigger additional sanctions."