Last August, the U.S. Department of Agriculture’s Food & Safety Inspection Service, the federal team responsible for ensuring the safe and accurate labeling of the commercial meat supply, issued letters to several dozen meat producers to inform them of antibiotics detected in beef. This isn’t an unusual finding — antibiotics are widely used on industrial animal farms — yet the meat sampled was on track to be sold as “antibiotic-free,” “raised without antibiotics” or a similar label promising that the animals were never administered antibiotics.