Senator Marco Rubio, a Republican from Florida and 2016 presidential candidate, speaks during a campaign event at Iowa State University in Ames, Iowa, U.S., on Saturday, Jan. 30, 2016. Rubio has resolved to stay below the fray as 2016 Republican presidential candidates Donald Trump, president and chief executive of Trump Organization Inc., and Senator Ted Cruz, a Republican from Texas, fight it out for the top two spots in Monday's Iowa caucus, counting on a strong third-place finish to cement his status as the mainstream conservative to beat, his advisers say. Photographer: Luke Sharrett/Bloomberg via Getty Images
Getty Images

Bloomberg Bloomberg