The United States will be one of only four countries outside the Paris Agreement, which is designed to reduce global greenhouse gas emissions.

President Trump announced the withdrawal of the U.S. from the Paris Climate Agreement on Monday shortly after his inauguration, echoing a similar decision in his first term that was later reversed

U.S. withdrawal from the world's primary climate pact will have a bigger impact - in the U.S. and globally - than the country's first retreat in 2017, analysts and diplomats told Reuters. One of President Donald Trump's first acts on returning to office on Monday was to quit the Paris Agreement as part of his plans to halt U.