President Donald Trump announced and then swiftly abandoned a plan to charge a 20% toll on cargo ships transiting the Strait of Hormuz, sparking international confusion and criticism.
On July 13, Trump declared on Truth Social that the U.S. would become the “GUARDIAN OF THE HORMUZ STRAIT” and charge a “20% on all cargo shipped” to cover the costs of security Source: CNN. He reiterated the idea in a Fox News interview during a renewed blockade of Iranian ships Source: Al Jazeera. The proposal came despite months of warnings from his own advisers, including Secretary of State Marco Rubio, who had said in June that “no country is allowed to charge tolls or fees” on international waterways Source: PolitiFact.
Military and legal experts called the toll unprecedented and likely illegal under the U.N. Convention on the Law of the Sea, which the U.S. accepts as customary law Source: PolitiFact. Andreas Krieg of King’s College London told Al Jazeera the idea “misunderstands what the dispute … has become” and would “inadvertently validate Iran’s own argument” that passage can be monetized Source: Al Jazeera. Gulf allies—including Saudi Arabia, the UAE, Bahrain, and Qatar—frantically called Trump to oppose the plan Source: CNN.
Within 24 hours, Trump backed down. He posted that he would replace the “20% United States Reimbursement Fee with Trade and Investment Deals” from Gulf states Source: El País. At a White House appearance, he said he does not believe “anyone should be able to charge a fee for the use of the strait” Source: The Guardian. The episode highlighted the chaotic nature of Trump’s foreign policy and left the U.S. position on Hormuz murky.
““The U.S.A. will be, from this point forward, known as ‘THE GUARDIAN OF THE HORMUZ STRAIT,’” he wrote on Truth Social Monday morning, vowing to charge a 20% toll on all cargo shipped through the strait.”
““No country is allowed to charge tolls or fees on an international waterway. That’s existing international law. That’s the way it is in international waterways all over the world, and that’s the way we expect it’ll be here.” — Secretary of State Marco Rubio, June 2026”
““The problem is that the proposal misunderstands what the dispute over the Strait of Hormuz has become. This is no longer primarily about generating revenue. It is about authority, prestige and who sets the rules of the Gulf’s most important waterway.” — Andreas Krieg, King's College London”
“Donald Trump has taken the war with Iran into a new, murkier phase as the two sides move further and further from the vague memorandum of understanding (MoU) signed on 17 June.”
““I have decided to replace the 20% United States Reimbursement Fee with Trade and Investment Deals that the various Gulf States will be making into the United States,” Trump wrote on Truth Social.”
““President Trump’s policy, if enforced, would constitute a massive departure from past U.S. policy, international practice and would be inconsistent with both the Law of the Sea Convention and customary international law,” said Gunther Handl, Tulane University law professor.”
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