The E.P.A. announced that it would not begin phasing in until next January a controverial requirement that power plants obtain permits to emit greenhouse gases. The Obama administration would prefer comprehensive energy legislation, but is developing a regulatory plan in case Congress fails to act.

CITY TECH BLOG
The Impact of the Paris Climate Change Agreement in the United States
The United States, under the Obama administration, joined the Paris Agreement in 2015 and committed to reducing greenhouse gas emissions by 26-28% below 2005 levels by 2025. However, in June 2017, the Trump administration announced its intention to withdraw from the agreement (Shear). In April 2021, President Joe