As soon as that happens, the United States can leave the accord in exactly one year. (The Trump administration could also change its mind at any point beforehand and decide to stay in.) Nov. 4, 2020This is the earliest that the United States could officially withdraw from the climate accord. Also by 2020, other countries are scheduled to offer new or updated commitments for how they plan to tackle climate change under the Paris deal. If the United States does rejoin Paris, however, it could take time to regain the credibility it once had within climate discussions.

Source: New York Times June 07, 2017 17:28 UTC