Former Iowa U.S. Senator Tom Harkin speaks as a sign language interpreter (R) stands beside him at the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 26, 2016. REUTERS/Gary ... more 
Former Iowa U.S. Senator Tom Harkin speaks as a sign language interpreter (R) stands beside him at the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 26, 2016. REUTERS/Gary Cameron less 
1 / 30
Reuters | Photo By GARY CAMERON / REUTERS
Tue, Jul 26, 2016 4:57 PM EDT