PUERTO PENASCO, Mexico — Mexican and U.S. governors called for help from Washington Friday in alleviating massive traffic jams at the U.S.-Mexico border, saying the U.S. security concerns shouldn't mean long bottlenecks. The demands arose at the annual U.S.-Mexico border governors conference at this resort on the Gulf of California, where U.S. Homeland Security Secretary Michael Chertoff was expected to discuss increased border fencing and stepped-up security later in the day. "We have the biggest parking lots in the world, at all times of day, and moreover, it is creating a pollution problem," said Baja California Gov. Eugenio Elorduy. "It's...