Reuters: A group of U.S. states led by coal producer West Virginia and oil producer Texas on Tuesday asked the U.S. Supreme Court to put a hold on President Barack Obama's plan to curb carbon dioxide emissions from power plants to combat climate change. The 26 states filed a stay application with U.S. Chief Justice John Roberts after an appeals court in Washington declined last week to block Obama's Clean Power Plan while litigation over its lawfulness goes ahead. "If this court does not enter a stay, the...