In this July 18, 2016, file photo, Sen. Joni Ernst, R-Iowa, speaks during the opening day of the Republican National Convention in Cleveland. (AP Photo/J. Scott Applewhite, File)
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In this July 18, 2016, file photo, Sen. Joni Ernst, R-Iowa, speaks during the opening day of the Republican National Convention in Cleveland. (AP Photo/J. Scott Applewhite, File)
