There's something the Democratic lawmakers who are pushing cap-and-trade legislation don't want the public to know. The controversial climate-change legislation winding its way through Congress will impose a massive new national gas tax on the American people. We discovered this by analyzing what the Waxman-Markey cap-and-trade bill would do to gas prices and what Americans spend on gasoline, diesel and jet fuels. We found that cap-and-trade legislation will levy a $3.6 trillion gas-tax increase that will impact every American and important segments of our economy. Americans travel more than 200 million vehicle miles each month, and annually we spend nearly...