WASHINGTON — The Supreme Court’s surprise decision Tuesday to halt the carrying out of President Obama’s climate change regulation could weaken or even imperil the international global warming accord reached with great ceremony in Paris less than two months ago, climate diplomats say.
The Paris Agreement, the first accord to commit every country to combat climate change, had as a cornerstone Mr. Obama’s assurance that the United States would enact strong, legally sound policies to significantly cut carbon emissions. The United States is the largest historical greenhouse gas polluter, although its annual emissions have been overtaken by China’s.
But in the capitals of India and China, the other two largest polluters, climate change policy experts said the court’s decision threw the United States’ commitment into question, and possibly New Delhi’s and Beijing’s.
“If the U.S. Supreme Court actually declares the coal power plant rules stillborn, the chances of nurturing trust between countries would all but vanish,” said Navroz K. Dubash, a senior fellow at the Center for Policy Research in New Delhi. “This could be the proverbial string which causes Paris to unravel.”
The court did not block the rule permanently, but halted it from being carried outin the states until legal challenges against it have been decided, a process that could take a year or more. Legal experts said the justices’ decision to stop work on the rule before any court had decided against it was unprecedented and signaled that the regulation might ultimately be overturned. That could set back the United States’ climate efforts for years, although there would still be a chance for Washington to meet its commitments by 2025.