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

President Donald Trump is once again withdrawing the United States from the Paris climate accords, pulling the nation whose factories, cars and power plants contributed the most cumulative planet-heating pollution to the atmosphere out of the first global pact to slash carbon emissions enough to prevent the world’s average temperature from reaching dangerous new heights.

When Trump announced the U.S. withdrawal from the climate agreement in 2017, the move reverberated around the globe. Nearly 200 nations had committed to reducing greenhouse gas emissions under the pact when it was created in 2015, and they had set ambitious targets to keep global temperature rise well below 2°C, and ideally below 1.5°C.