The Agriculture Department does not know how much U.S. farmland is owned by foreign investors, the Government Accountability Office says in a new report, recommending that USDA better its data collection system and share data with the Defense Department and, by extension, the Committee on Foreign Investment in the U.S. The Jan. 18 report comes amid increasing concerns over the acquisition of U.S. farmland by foreign entities, particularly Chinese companies. Foreign ownership of U.S. agricultural land, the report noted, has...