TEXT: IOWA CITY, IA - JANUARY 31 : Republican presidential candidate, U.S. Sen. Rand Paul (R-KY) waves as he is introduced by his father Ron Paul, former U.S. Representative from Texas during a campaign event at the University of Iowa Memorial Union January 31, 2016 in Iowa City, Iowa. Paul who is seeking the nomination for the Republican Party is on the presidential campaign trail across Iowa ahead of the Iowa Caucus taking place Monday, a week before the New Hampshire Primaries. (Photo by Joshua Lott/Getty Images)