トランプ政権は、国際海運への炭素税導入を支持する国々に対し、査証（ビザ）制限、関税、港湾使用料を課すと警告している。こうした圧力にもかかわらず、先日の国連会議では、過半数の国々が当初のネットゼロ枠組みを支持した。
世界の貿易の90％は船舶によるものであり、海運部門は世界の二酸化炭素排出量の約3％を占めている。国際海事機関（IMO）は昨年、ネットゼロ達成に向けた計画を採択する予定であったが、米国の脅しにより数か月にわたって進展が遅れ、より規制の緩い代替案が浮上することとなった。
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President Donald Trump announced on February 21, 2026, that he would increase global tariffs from 10% to 15%, following a U.S. Supreme Court decision striking down his previous tariffs. The court ruled 6-3 that the International Emergency Economic Powers Act does not authorize such broad import taxes. The move comes amid divided reactions from Republicans and potential refunds of billions in collected duties.
The International Maritime Organization is convening this week to address the shipping industry's 3 percent share of global greenhouse gas emissions, amid closures of key Middle East waterways. The net-zero framework, which would impose fees on excess emissions to fund cleaner fuels, faces opposition from the United States and others. Geopolitical tensions have delayed progress and complicated consensus.
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The Trump administration has opposed several international efforts to address climate change, including a proposed carbon tax on shipping emissions, a plastics production treaty, a UN resolution from Vanuatu, and IEA energy forecasts. These actions involved withdrawing from negotiations, issuing threats, and pressuring diplomatic partners. While some efforts faced delays, global renewable investments reached $2.3 trillion last year.
The US Supreme Court annulled most tariffs imposed by Donald Trump under the International Emergency Economic Powers Act (IEEPA) on Friday, in a 6-3 decision limiting its use for trade duties. Hours later, Trump signed an executive order for a 10% global tariff under Section 122 of the Trade Act of 1974, exempting T-MEC products. The measure takes effect on February 24.
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US President Donald Trump announced on May 1, 2026, via Truth Social, 25% tariffs on cars and trucks imported from the European Union effective next week, claiming the bloc breached last summer's trade deal. The EU insists it is complying, demands clarifications, and reserves all options for retaliation, as Germany's auto sector braces for heavy impact.
Following the Supreme Court's rejection of his emergency tariff powers and Trump's subsequent 15% global tariff announcement, Democrats are framing the policy as a midterm vulnerability on affordability, while Republicans tout economic benefits amid new data showing sluggish growth.
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Indonesian President Prabowo Subianto expressed readiness to mitigate risks from US President Donald Trump's hike of global import tariffs to 15%, announced February 21, 2026, one day after a Supreme Court ruling invalidated prior tariffs. Officials affirmed that bilateral trade negotiations continue, highlighting zero-tariff deals for key Indonesian exports.