Agriculture: Already buffeted by rising food prices due to biofuels, consumers face a bigger hike if climate-change legislation is passed. Farming costs will rise, and it may be more profitable to plant trees than crops. If the cap-and-trade provisions of the Waxman-Markey bill become law, you can wave goodbye to those amber waves of grain as America's heartland falls victim to a perverse set of incentives and a process called "afforestation." Soybeans and wheat will give way to elms and oaks. Agriculture Secretary Tom Vilsack wants a review of what amounts to an agricultural impact study of HR 2454, which...