We leave Mission this morning. Once a sleepy town on the Mexican border, Mission is now part of the popular Lower Rio Grande Valley. This includes walled and well watered communities that are similar to gated communities in southwest Florida, shack communities of recent immigrants, vast farms where the corn is now in some places a foot tall, grazing lands, salt scrub, and a miles long commercial strip along US Route 83. Between Brownsville and Mission there are about five miles between each Walmart.