It is rare for the U.S. Supreme Court to construe a statutory phrase on multiple occasions. And yet now, for purposes of the federal Clean Water Act (CWA or the Act), it has rendered no less than four interpretations of the...more
In 2007, the Supreme Court told the U.S. Environmental Protection Agency (EPA) it was wrong to conclude that it lacked the authority to regulate greenhouse gases (GHGs) emitted from vehicles, because GHGs are an “air...more