TULSA, OK—Day laborer Cal Thornton, driven from the Wal-Mart where his family worked the stockroom for generations, has heard tell of Sam's Club work in New Mexico. "They say they need 17 guys to unload pallets of toilet paper, baby food, and canned peaches in Las Cruces," Thornton said. "Word is, they got cans of peaches in New Mexico so big, you got to use two hands to lift 'em." Thornton loaded his family and few belongings into the cab of his rusted pickup truck and began the migration Tuesday.