Cap-And-Trade: The administration likes to defend bad policies with analogies to the post office. New studies from a business group and the administration itself confirm that cap-and-trade belongs in the dead-letter bin.Along with Energy Secretary Steven Chu, Rep. Ed Markey likens the cost of the Waxman-Markey cap-and trade bill to "about a postage stamp a day," based on estimates made by the Congressional Budget Office and the EPA. But as we and others have shown, they arrive at this magical number in part by ignoring the hit on gross domestic product and employment that will occur. As Garret Vaughan, economist...