"Part of this issue is driven by labor supply factors. The farm labor force in the U.S. is aging, and it's not really being replaced by young immigrant workers the way it once was, " Zachariah Judson Rutledge, a U.S. Davis doctoral student and the lead author on the study, told Newsweek. "One of the main factors was there's an expanding economy in Mexico for both farm work and non-farm."
