American consumers' appetite for organic foods (organics) has dramatically increased since Congress passed the Organic Foods Production Act (OFPA) in 1990. Because the domestic organic food industry has been unable to meet the growing demand for these products, U.S. groceries have increasingly relied on imported organics. Studies show that 40% of organic foods consumed in the United States are imported from over 100 foreign countries. To regulate organic food production, the United States Department of Agriculture (USDA) accredits certifying agents, which in turn certify organic farms and handlers according to U.S. organic standards. Certifying agents can be state agencies or private enterprises, including foreign entities. In 2007, USDA-accredited agents certified 27,000 organic producers worldwide. This certification allows approved foreign products to bear the "USDA Organic" seal and freely enter the U.S. market.