Shamrock Farms is under fire from the USDA for questionable “split operation” livestock management practices that could get their organic certification revoked. The USDA investigation is in response to a formal complaint by the Cornucopia Institute, an organic industry watchdog that first inspected Shamrock in 2008. Cornucopia found “inadequate, overgrazed pasture adjacent to their milking facility,” and learned from Shamrock employees that “the confined cows had not been out in weeks.” Federal organic regulations require that cows be grazed, a practice that some factory-scale dairies shirk according to Cornucopia’s investigations.