The Obama administration is surging forward with a first-of-its-kind EPA rule for new power plants, in what Republicans and industry groups say will inflate electricity prices and possibly kill off coal, the preeminent U.S. energy source. The EPA announced the rule Tuesday, with a goal to curb carbon dioxide emissions by imposing strict regulations on new coal-fired plants, including a limit that caps plant emissions to not more than 1,000 tons of carbon dioxide per megawatt-hour of energy generated. "Right now there are no limits to the amount of carbon pollution that future power plants will be able to put...