President Donald Trump has extended for 90 days a waiver allowing foreign-flagged ships to transport oil and other commodities between U.S. ports, but imposed new limits after shipbuilders and their allies in Congress argued the policy was undermining the domestic maritime industry, the White House said.

The extension, finalized on Monday, comes as the war with Iran disrupts global crude flows and pushes up fuel costs, increasing pressure on the administration to find ways to ease transportation bottlenecks and keep gasoline and other energy prices from rising further.

The 90-day extension ensures the U.S. military and key industries maintain uninterrupted access to critical resources, White House spokeswoman Taylor Rogers said on Monday.

"Data shows the waiver has driven a significant increase in domestic deliveries of essential products such as gasoline, diesel, and jet fuel," Rogers said in a post on the social media platform X.

Under the new terms, the administration has narrowed the scope of the relief, requiring individual voyages to undergo case-by-case review rather than allowing foreign ships to receive blanket exemptions from the Jones Act, a White House official confirmed.

The Jones Act requires cargo moving between U.S. ports to be carried on ships built in the U.S., owned by U.S. companies and crewed by American workers, and the waiver aims to lower gas prices by increasing shipping flexibility and reducing transport bottlenecks.

The waiver was set to expire on August 16 without the extension. It is the longest suspension of the more than a century-old law in its history.

Targeted Jones Act waivers provide critical flexibility to move American energy efficiently between U.S. ports and deliver fuels to consumers at a time of ongoing global market volatility, industry trade group American Petroleum Institute said.

While the Jones Act waiver increases the availability of tankers to move fuel, it would likely only reduce gasoline prices by pennies per gallon, some analysts and industry experts have said.

The American Maritime Partnership, which is in favor of the Jones Act, said it was disappointed that the waiver had been extended but that requiring a case-by-case review is an improvement over the previous blanket waiver.

“President Trump’s decision to require a case-by-case review before allowing foreign vessels to carry domestic maritime commerce is an improvement over the previous blanket Jones Act waiver, which took work from American mariners and shipbuilders and froze investment in the maritime industrial base,” said Jennifer Carpenter, President, American Maritime Partnership. 

“However, we are disappointed that the waiver has been extended when the public record is clear: the waiver has not lowered fuel prices for American consumers and has been used to increase oil traders’ margins, not meet military needs.”

AMP urges the Trump Administration to conduct a rigorous review of the national defense justification for each and every waiver request and to carefully assess the availability of U.S. vessels before allowing a foreign vessel to move cargo between U.S. ports.

AMP also underscores the importance of ensuring that any foreign vessel granted a waiver to meet a genuine national defense need for which a U.S. vessel is not available complies fully with all other applicable U.S. law, including tax, immigration, labor, etc.

“This is essential to putting American workers and taxpayers first,” says Carpenter.

About 208 exemptions to the Jones Act were granted in about 4-1/2 months through August 3, U.S. government data showed.

Conservative think tank Cato Institute, which has long called for the law to be repealed, said Congress should make changes to the Jones Act, calling temporary, product-specific waivers a band-aid.

(Reuters and staff)