Certified organic refers to agricultural products that have been grown and processed according to uniform standards, verified by independent state or private organizations accredited by the USDA. All products sold as “organic” must be certified. Certification includes annual submission of an organic system plan and inspection of farm fields and processing facilities. Inspectors verify that organic practices such as long-term soil management, buffering between organic farms and neighboring conventional farms, and recordkeeping are being followed. Processing inspections include review of the facility’s cleaning and pest control methods, ingredient transportation and storage, and recordkeeping and audit control. Organic foods are minimally processed to maintain the integrity of food without artificial ingredients or preservatives. Certified organic requires the rejection of synthetic agrochemicals, irradiation and genetically engineered foods or ingredients. Since 2002, organic certification in the U.S. has taken place under the authroity of the USDA National Organic Program, which accredits organic certifiying agencies, and oversees the regulatory process.