FILE – In this July 1, 2013, file photo smoke rises from the Colstrip Steam Electric Station, a coal burning power plant in in Colstrip, Mont. Colstrip is kind of plant called on by President Barack Obama’s climate change plan to reduce carbon dioxide emissions. Monday, Feb. 24, 2014, the U.S. Supreme Court will hear arguments on the unanimous federal appeals court ruling, that upheld the Environmental Protection Agency’s unprecedented regulations, aimed at reducing the greenhouse gases blamed for global warming. The case comes to the court amid Obama’s increasing use of his executive authority to act on environmental and other matters when Congress doesn’t, or won’t. (AP Photo/Matthew Brown, File)

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