Trump says the deal "disadvantages" the US and is causing lost jobs and lower wages.
What is the Paris Agreement?
How much the USA leaving the accord will impede achievement of that goal remains to be seen.
Mr Trump suggested that other nations were "laughing" at the USA and that the accord was "about other countries gaining an advantage over the United States".
President Donald Trump said Thursday he was withdrawing the usa from the Paris climate agreement, striking a major blow to worldwide efforts to combat climate change and distancing the country from many allies overseas.
He also said that the United States would be willing to re-enter the deal on "better terms".More news: Jeremy Corbyn WILL take part in tonight's BBC election debate
Most importantly, developing nations abandoned their long-held notion that reducing greenhouse gas emissions was an obligation just for rich countries - the main reason that the George W. Bush administration refused to join the Kyoto deal. Rather than quitting Paris, Trump could "adjust" the Obama administration emissions target downward, Stern wrote last month in an opinion piece in The Washington Post. But Trump said other nations will have an unfair advantage over the U.S.
Compared to the federal government, US states have limited ability to implement and enforce worldwide agreements, including the Paris pact, which is aimed at preventing the planet from warming 2 degrees Celsius, or 3.6 degrees Fahrenheit. It is not a branding opportunity, nor is it intended as a platform for lobbying.
Mitt Romney tweeted, "Affirmation of the #ParisAgreement is not only about the climate: It is also about America remaining the global leader".
She plans to meet with her USA counterpart in Italy next week, where she will "seek clarity" on the US position. "The U.S.is already leading the world in energy production and doesn't need a bad deal that will harm American workers", it read.
Trump's decision sets the world's largest economy apart from nearly all other nations on earth, and came in opposition to many large American companies, as well.
Why are Republicans suggesting Trump withdraw from the Paris Agreement and will it really cost jobs?
CEOs from Apple, Facebook, and Google all urged President Trump to support the pact. Their argument was that with the agreement still formally on the table, it could be harder for the president to roll back the Obama-era Clean Power Plan, which he has promised to do. But now that he's in office, he has said the US will stay in the accord and try to negotiate better terms. Even North Korea, one of the most isolated countries, has signed on. Fewer regulations, they argue, promote business and more jobs. President Trump has made the most reckless and irresponsible decision by a USA president since the Iraq war.