The General Accounting Office has written numerous reports highlighting the dangers inherent in a fragmented approach to U.S. food safety. Federal regulation of food safety is split primarily among agencies in the Department of Health and Human Services and the Department of Agriculture, but some responsibilities are also delegated to the Environmental Protection Agency (EPA), the Department of Commerce, and the Department of Homeland Security. Within the Department of Health and Human Services, the Food and Drug Administration (FDA) is responsible for the safety of most food products with the exception of meat, poultry, and processed eggs. Animal drugs and livestock feed are also part of the FDA safety mandate, while outbreaks of foodborne illnesses are monitored and probed by the CDC. Within the USDA, the Food Safety and Inspection Service is charged with oversight of the safety, wholesomeness, and proper labeling of meat, poultry and processed eggs. Inspectors are required to be onsite at nearly every slaughterhouse in the nation when animals are being readied for human consumption. As a result, the FSIS has a larger annual budget and employs a much larger number of inspectors than the FDA, even though the FDA's mandate is much broader. Other USDA agencies with a role in food safety include the Animal and Plant Health Inspection Service (APHIS), which aims to prevent animal and plant diseases in domestic and imported products, and the Agricultural Marketing Service (AMS), a service whose primary function is to set quality, grades and marketing standards for dairy products, fruits, vegetables and meat.