washington u.s. state department officially inform unite nations withdraw paris climate agreement document issue friday leave door open re-engaging term improve unite state state department say press release unite state would continue participate unite nations climate change meet withdrawal process expect take least three years unite state support balance approach climate policy low emissions promote economic growth ensure energy security department say release president donald trump announce decision withdraw paris deal june say accord would cost america trillions dollars kill job hind oil gas coal manufacture industries also time say would open renegotiate deal agree nearly 200 nations course years draw ridicule world business leaders say would impossible visit last month paris meet french president emmanuel macron two discuss deal trump tell reporters something could happen respect paris accord let see happen president indicate june announcement subsequently open re-engaging paris agreement unite state identify term favorable businesses workers people taxpayers state department say press release formal notice withdrawal republican u.s. congressional leaders back trump move exit accord senate majority leader mitch mcconnell example say another significant blow obama administration assault domestic energy production job numerous business leaders call move blow international efforts combat climate change miss opportunity capture growth emerge clean energy industry unite state former president barack obama pledge part paris accord cut u.s. greenhouse gas emissions much 28 percent 2005 level 2025 help slow global warm early date unite state completely withdraw agreement nov. 2020 around time next u.s. presidential election u.s. submit formal notice withdrawal paris climate pact