The Paris agreement is complex and works in a slow bureaucratic manner. It’s a mostly voluntary climate pact originally written in ways that would both try to reduce a worsening climate change problem and withstand the changing political winds in the United States.

Trump signed an executive order that begins the process of withdrawing from the Paris Climate Agreement, which he also did during his first term.

Former New York Mayor Michael Bloomberg's philanthropy and other U.S. funders said on Thursday they will cover U.S. financial obligations to the UN climate framework after President Donald Trump called for the U.