The U.S. Environmental Protection Agency is about to pull the rug from underneath climate regulation by repealing the so-called endangerment finding—an EPA decision from 2009 saying greenhouse gases “threaten the public health and welfare of current and future generations.” The decision names six gases as dangerous, including carbon dioxide and methane, on which much of climate regulation in the United States since 2009 has focused, notably tailpipe emission regulations and power plant emission reduction requirements. Bloomberg…