** FILE ** Sen. Marco Rubio, Florida Republican, speaks at the Conservative Political Action Conference at the Gaylord National Hotel in National Harbor, Md., on Thursday, March 14, 2013. (Andrew Harnik/The Washington Times)

Photo by: ANDREW HARNIK

** FILE ** Sen. Marco Rubio, Florida Republican, speaks at the Conservative Political Action Conference at the Gaylord National Hotel in National Harbor, Md., on Thursday, March 14, 2013. (Andrew Harnik/The Washington Times)