Is the traditional 100-watt incandescent light bulb about to go the way of the Tyrannosaurus Rex? Some Republicans on Capitol Hill hope not. They want to overturn the Energy Independence and Security Act of 2007, signed by then-President George W. Bush. The law requires all 100-watt incandescent light bulbs to be almost 30-percent more energy efficient by Jan. 1, 2012. Since that means higher production costs, manufacturers in America have stopped making the traditional bulbs. Some consumers have already started stockpiling the old-model bulbs, complaining that the replacements cast a unattractive light compared to the warmth of incandescent bulbs. Kentucky...