Raisin growers Marvin and Laura Horne have challenged a 66-year-old USDA regulation that allows the government to seize up to half a grower's raisin crop for forced resale overseas at discounted prices. The stated purpose is to keep the domestic price for raisins artificially high, but the Hornes claim that the seizure of their crop amounts to an unconstitutional taking without adequate compensation - and now the case is headed to the U.S. Supreme Court.