In this Feb. 27, 2015 file photo, Sen. Marco Rubio, R-Fla. speaks in National Harbor, Md.
In this Feb. 27, 2015 file photo, Sen. Marco Rubio, R-Fla. speaks in National Harbor, Md. Carolyn Kaster AP
In this Feb. 27, 2015 file photo, Sen. Marco Rubio, R-Fla. speaks in National Harbor, Md. Carolyn Kaster AP