The aircraft carrier Dwight D. Eisenhower was deployed last year in the Red Sea to counter the Houthi militia in Yemen. Shipping companies say they have no plans to return to the Red Sea soon.
The temporary lowering of tariffs may compel some U.S. businesses to order goods that they had held off buying after President Trump raised them to 145 percent.
The main oil and gas trade group wants the Trump administration to reconsider maritime rules released in April that would require it to use some U.S. ships to transport liquefied natural gas.
The new fees are aimed at countering China’s dominance of the shipbuilding industry, but critics say they will simply raise prices for American consumers.