President Donald Trump (R-FL) extended a waiver of the Jones Act on Monday to allow foreign-flagged vessels to transport oil around the U.S. [1].

The move aims to prevent fuel shortages as the ongoing war in Iran disrupts global supply chains and threatens the availability of oil within the United States [1, 2].

Under the Jones Act, ships transporting goods between U.S. ports must be U.S.-built, U.S.-owned, and U.S.-crewed. By extending the waiver, the administration allows international tankers to fill gaps in the domestic fleet, a necessity driven by the current geopolitical climate [1].

Supply chain volatility has increased as the conflict in Iran persists. The administration said the extension is required to keep fuel flowing to coastal regions and maintain energy security [1, 2].

Critics of the Jones Act have long argued that the law increases shipping costs and limits flexibility during crises. The current conflict has intensified these arguments, with some suggesting the war should signal a permanent end to the act's restrictions [2].

Government officials said the waiver is a temporary measure to address the immediate pressures of the war [1]. The administration continues to monitor the impact of the conflict on global energy markets to determine if further extensions or policy shifts are required [1, 2].

Foreign-flagged vessels may continue transporting oil in US waters to stabilize fuel supplies.

The extension of the Jones Act waiver highlights the vulnerability of the U.S. domestic shipping fleet during global energy crises. By relying on foreign vessels, the U.S. can mitigate immediate price spikes and shortages caused by the war in Iran, but the move also exposes a long-standing debate over whether protectionist maritime laws hinder national security during wartime.