Trump has proposed extending the waiver of the Jones Act, a maritime law that mandates goods be transported on American-flagged vessels between U.S. ports. This waiver, initially issued on March 18 during the Iran conflict, aimed to ease oil transportation amid rising fuel prices. Since its implementation, 40 tankers have utilized the waiver, boosting the effective fleet size by 70% and reducing shipping costs. The Jones Act, established in 1920, is known for increasing shipping expenses, and Trump's extension seeks to maintain the current streamlined oil transport system.