WASHINGTON, Feb. 28 -- Sen. Joni Ernst, R-Iowa, issued the following news release: * * * Ernst Works to Promote Fair Trade and Remove Barriers for Iowa Agricultural Exports WASHINGTON - U.S. Senator Joni Ernst (R-Iowa), a member of the Senate Agriculture Committee, is working to promote fair markets and protect American agricultural exports by bridging the gap between the Office of the United States Trade Representative (USTR) and the U.S. Department of Agriculture (USDA). She introduced th more PR