Atotonilco, Mexico - They name their babies Johnny and Leslie, so certain are they that their kids' future lies in the United States. Returning migrants sprinkle English into their speech as they talk knowingly about job markets in U.S. towns. The U.S. may want to stop illegal immigration, but most Mexicans accept it as a fact of life they can't imagine changing. Mexico's economy, society and political system are built on the assumption that migration and amnesties will continue - and that the $20 billion that undocumented workers send home every year will keep coming, and almost certainly grow. In...