President Donald Trump is granting energy companies and commodity traders an additional window to move oil and other goods between U.S. ports aboard foreign-flagged vessels, extending an initiative designed to curb domestic fuel prices, according to Bloomberg. According to an anonymous White House official speaking ahead of the formal announcement, Trump has authorized a 90-day extension to the waiver of the century-old Jones Act. Normally, this law mandates that all maritime cargo transported between U.S. ports be carried exclusively on ships that are built, owned, flagged, and crewed by Americans. The renewal arrives just 48 hours ahead of the previous waiver's scheduled expiration. The official noted that the new extension will go into effect at midnight Monday, New York time, preventing any lapse in coverage.