Trump Withdraws U.S. From Paris Climate Agreement

On June 1, 2017, Donald Trump walked out to the White House Rose Garden and announced that the United States — the world’s second-largest greenhouse-gas emitter and largest cumulative polluter in history — would withdraw from the Paris Climate Agreement. The accord, signed in 2015 by nearly every country on Earth, was the only global framework for keeping warming below catastrophic levels. Trump’s decision made the United States the only nation in the world to repudiate it.

He had been president for 132 days.

The Fake Numbers

Trump justified the withdrawal with economic claims that fell apart on contact with the evidence. He told the country the agreement would cost the United States $3 trillion in lost GDP and 6.5 million jobs. Those figures came from an industry-funded study by NERA Economic Consulting that assumed, among other things, that the U.S. would take no advantage of falling renewable-energy prices and that other countries would meet their commitments while the U.S. exceeded its own. The study’s own authors said it was not a forecast.

Reporters noted at the time that the Paris Agreement was nonbinding. Each country set its own emissions target and its own timeline. There was no enforcement mechanism, no penalty for missing a goal, and no Paris-imposed cost to the U.S. economy. Trump was withdrawing from a voluntary agreement on the grounds that it would force the United States to do things it could simply choose not to do.

”Pittsburgh, Not Paris”

The applause line of the speech — “I was elected to represent the citizens of Pittsburgh, not Paris” — was meant as populist defiance. Within minutes, Pittsburgh’s mayor Bill Peduto pointed out that his city had voted 80 percent for Hillary Clinton, that Pittsburgh had committed to 100 percent renewable energy, and that the mayor of Paris was on the phone planning their joint climate response.

It was the rhetorical signature of Trump’s environmental policy: a confident lie wrapped around contempt for the people he was claiming to defend.

What the Withdrawal Cost

Under the agreement’s rules, the formal U.S. exit could not take effect until November 2020 — the day after the election Trump would lose. But the practical damage began immediately:

• The Green Climate Fund. Obama-era commitments to help developing countries adapt to climate change were cut off. Vulnerable nations across the Global South lost critical funding to deal with droughts, floods, and rising seas that the United States had played the largest role in causing.
• Diplomatic credibility. Every multilateral negotiation the U.S. participated in over the next four years carried the implicit asterisk that an American commitment could be revoked by executive whim.
• Emissions. Analyses found that Trump-era rollbacks — leaving Paris was the headline, but his administration also gutted the Clean Power Plan, vehicle fuel-economy standards, and methane regulations — put the U.S. on track for emissions roughly 36 percent higher than the policy trajectory it inherited.

Biden rejoined the agreement on his first day in office in January 2021. Trump withdrew again on January 20, 2025, hours after his second inauguration.

The Pattern

Paris was an early, clean expression of how Trump governs: declare a problem doesn’t exist, lie about the cost of doing something about it, attack the experts who explain why he’s wrong, and frame surrender to fossil-fuel donors as patriotism. The same pattern would later produce his WHO withdrawal during a pandemic, his tariff wars launched on fabricated trade-deficit figures, his dismantling of EPA enforcement, and the second-term gutting of every federal agency staffed with people who know more about a subject than he does.

Climate change does not respond to executive orders. The carbon dioxide the U.S. continued to emit during the four years Trump stalled global action is still in the atmosphere. The lost time cannot be recovered. The damage from June 1, 2017, is not a Rose Garden speech — it is a measurable acceleration of the worst environmental crisis in human history, with an American president’s name on it.