The National Law Journal's Tony Mauro reports that the U.S. Supreme Court appears to be "mostly sympathetic" to the Environmental Protection Agency's climate-change regulation: "Any hope among industry advocates that the U.S. Supreme Court might ban Environmental Protection Agency regulation of greenhouse gases altogether went up in smoke, so to speak, during more than 90 minutes of spirited argument last week. For one thing, Chief Justice John Roberts Jr. and Justice Anthony Kennedy both suggested the court has some obligation not to ignore the court's 2007 precedent Massachusetts v. Environmental Protection Agency. That decision said the EPA did have authority to regulate greenhouse gases emitted by motor vehicles. For another, even Peter Keisler, the lawyer for five sets of private challengers to EPA regulation, acknowledged during the argument Feb. 24 that the EPA's mandate extended to stationary sources under other parts of the Clean Air Act — just not the part at issue in the case being argued."