Justin Gillis, and Nadja Popovich, writing for The New York Times: The United States, with its love of big cars, big houses and blasting air-conditioners, has contributed more than any other country to the atmospheric carbon dioxide that is scorching the planet. "In cumulative terms, we certainly own this problem more than anybody else does," said David G. Victor, a longtime scholar of climate politics at the University of California, San Diego. Many argue that this obligates the United States to take ambitious action to slow global warming. Against that backdrop, factions in the Trump administration are engaged in a heated debate over whether to remain a party to the 195-nation agreement on climate change reached in Paris in 2015. President Trump promised on Wednesday to announce his decision at 3 p.m Thursday in the White House Rose Garden. A decision to walk away from the accord would be a momentous setback, in practical and political terms, for the effort to address climate change. Several news outlets, citing people in the administration, reported on Wednesday that the US is likely to pull out of the agreement.