President Donald Trump has extended the waiver of the Jones Act for an additional 90 days, permitting international companies to continue transporting gasoline, fertilizer, and other commodities between U.S. ports at market rates. The extension comes despite criticism that the waiver has had only a marginal effect on retail fuel prices.

The Jones Act, formally Section 27 of the Merchant Marine Act of 1920, requires that cargo moving between U.S. ports be carried on ships that are U.S.-built, U.S.-owned, and U.S.-crewed. The initial waiver took effect on March 17 and was previously extended in May. Jones Act waivers have historically been granted only in narrow, emergency circumstances — typically in response to hurricanes or other supply disruptions — making this sustained, broad application to routine commercial cargo movements unusual.

The decision is widely viewed as an effort to generate positive economic headlines amid persistent inflation and elevated fuel costs heading into the mid-term elections. However, U.S. pump prices have remained high throughout the waiver period. As of August 10, the national retail average for gasoline had declined to approximately $4.01 per gallon — down roughly 48 cents from late-May levels. Analysts attribute that decrease primarily to other market factors rather than the Jones Act waiver, noting that its direct impact amounts to only pennies per gallon. The limited benefit is constrained by high international tanker freight rates and the relatively modest cargo volumes transported under the exemption.

According to pricing agency Argus, the waiver has provided marginal supply-chain flexibility, particularly for Gulf Coast–to–West Coast shipments, where estimated savings amounted to just 6.6 cents per gallon compared with Jones Act–compliant tankers.

Some observers have also pointed to a policy contradiction: the waiver sends a mixed signal to domestic maritime interests at a time when Trump has placed the revitalization of U.S.-flag shipping and American shipbuilding at the center of his domestic agenda. Domestic maritime unions and U.S. shipbuilders, who have long supported the Jones Act as essential to maintaining a viable merchant marine and naval mobilization base, have generally opposed waivers as undermining the industrial capacity the law is designed to sustain.

Pro-business groups have long criticized the Jones Act, arguing that its protectionist requirements artificially inflate transportation costs and consumer prices.

"President Trump's decision to extend Jones Act relief for another 90 days acknowledges the burden the law has long imposed on U.S. security and commerce, as well as the significant benefits the waiver has delivered," said Colin Grabow and Scott Lincicome, analysts at the libertarian Cato Institute.

They noted that since March, the waiver enabled more than 54 million barrels of energy products to move between U.S. ports across over 200 voyages. "In most cases, these voyages took place on vessels with no connection to U.S. adversaries like China and supplied American companies with American energy products that would've otherwise been imported at a much higher cost (if at all)," they said.

The Cato analysts added that the waiver shipments have revealed significant gaps in the Jones Act fleet, including a shortage of vessels capable of transporting bulk propane and asphalt. They reported that nearly 15 million barrels were delivered to the West Coast and that the exemption enabled new propane flows to Puerto Rico.

Grabow and Lincicome characterized the waiver as a "band-aid," arguing that its economic and security benefits would only fully materialize through comprehensive, long-term reform or outright repeal of the Jones Act. Whether the extended waiver transitions into a permanent policy shift or reverts once the 90-day period expires will shape both domestic maritime investment decisions and the broader debate over the law's future.