On May 8, 2019, President Trump issued an Executive Order (EO) imposing sanctions on Iran's iron, steel, aluminum, and copper sectors. The EO authorizes blocking sanctions on Iranian and third-country persons operating in, providing support for, or engaging in significant transactions with these sectors. This order comes on the anniversary of President Trump's decision to withdraw the United States from the Iran nuclear deal. The EO aims to prevent Iran from funding weapons of mass destruction, terrorist groups, and military expansion by targeting its largest source of non-oil-related export revenue. While these new sanctions will not significantly affect U.S. persons (who are already prohibited from dealing with Iran), they will further pressure foreign companies that continue to deal with Iran and Iranian-origin goods.