To amend the Department of Agriculture Reorganization Act of 1994 to reaffirm the authority of the Under Secretary of Agriculture for Research, Education, and Economics, and for other purposes.

Agriculture Research Integrity Act of 2018 This bill amends the Department of Agriculture Reorganization Act of 1994 to reaffirm that the Agricultural Research Service, the Economic Research Service, the National Agricultural Statistics Service, the National Institute for Food and Agriculture, and any successor agencies must be: (1) within the research, education, and economics mission area of the Department of Agriculture (USDA); and (2) administered by the USDA Under Secretary for Research, Education, and Economics. USDA must locate each of the specified agencies and the majority of the staff of the agencies within the National Capital Region.