Governors' Wind Energy Coalition Biden administration to propose first rule requiring cut in climate pollutants Source: By Juliet Eilperin and Dino Grandoni, Washington Post • Posted: Monday, May 3, 2021 The new Environmental Protection Agency rule targets hydrofluorocarbons, greenhouse gases that are thousands of times more powerful than carbon dioxide Environmental Protection Agency Administrator Michael Regan, pictured in Wilmington, Del., on Dec. 19, supports the Biden administration’s climate plan. (Jonathan Newton/The Washington Post) The Environmental Protection Agency will propose a rule Monday aimed at sharply cutting the use and production of a class of powerful greenhouse gases used widely in refrigeration and air conditioning. The proposal marks the first time President Biden’s administration has used the power of the federal government to mandate a cut in climate pollution.