USDA Food Safety and Inspection Service
"Responsible for ensuring that the nation's commercial supply of meat, poultry, and egg products is safe, wholesome, and correctly labeled and packaged."
• Laws etc
• Regulations, Directives, Notices
• Compliance Guidance (Food Defense Planning, Food Safety Assessments, HACCP, Labeling, etc)
USDA Animal & Plant Health Inspection Service
"...protecting and promoting U.S. agricultural health, regulating genetically engineered organisms, administering the Animal Welfare Act and carrying out wildlife damage management activities."
FDA is in the US Department of Health & Human Services
FDA Regulatory Information
Including laws enforced by FDA
FDA Guidance & Regulation
Food Safety Modernization Act, HACCP, CGMPs, etc
Food & Nutrition Information Center National Agricultural Library
Gateway to selected information resources on food.