Sen. Marco Rubio (R-Fla.) speaks at this year's Conservative Political Action Conference (C.P.A.C.) held at the Gaylord National Hotel, National Harbor, Md., Thursday, March 14, 2013. (Andrew Harnik/The Washington Times)

Photo by: ANDREW HARNIK

Sen. Marco Rubio (R-Fla.) speaks at this year's Conservative Political Action Conference (C.P.A.C.) held at the Gaylord National Hotel, National Harbor, Md., Thursday, March 14, 2013. (Andrew Harnik/The Washington Times)