President Donald Trump has issued an executive order declaring Cuba an “unusual and extraordinary threat” to U.S. national security and foreign policy, triggering a new tariff mechanism with potentially broad supply-chain implications. Using authority under the International Emergency Economic Powers Act, the order allows the U.S. to impose additional ad valorem duties on imports from any country that directly or indirectly supplies oil or petroleum products to Cuba.

For logistics and trade stakeholders, the key takeaway is that tariffs are country-wide, not limited to energy products. Once a country is determined to be providing oil to Cuba, any goods originating from that country and imported into the U.S. could face higher duties, depending on the president’s final determination.

The tariffs could take effect as early as 12:01 a.m. ET on January 30, 2026, but enforcement hinges on a multi-agency review process. The Commerce Department will first determine whether a country is supplying oil to Cuba after that date. The State Department—working with Treasury, Commerce, Homeland Security, and the U.S. Trade Representative—will then assess whether tariffs should be imposed and at what level, with the president retaining final authority.

Notably, the order defines “indirect” oil sales broadly, covering shipments routed through intermediaries or third countries if there is knowledge the oil may ultimately reach Cuba. This raises compliance risks for complex energy and commodities supply chains, particularly those involving transshipment hubs or blended cargoes.

The policy arrives amid shifting regional energy flows. After U.S. pressure reduced Venezuelan oil shipments to Cuba, Mexico emerged as Cuba’s leading oil supplier, though recent reports indicate at least one planned Pemex shipment was paused amid concerns over U.S. retaliation. Mexican officials have signaled ongoing discussions with Washington as they assess the trade and diplomatic fallout.

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