Republican Sen. Marco Rubio speaks during a debate with Democratic Rep. Patrick Murphy at the University of Central Florida, Monday, Oct. 17, 2016, in Orlando.
Republican Sen. Marco Rubio speaks during a debate with Democratic Rep. Patrick Murphy at the University of Central Florida, Monday, Oct. 17, 2016, in Orlando. John Raoux AP
Republican Sen. Marco Rubio speaks during a debate with Democratic Rep. Patrick Murphy at the University of Central Florida, Monday, Oct. 17, 2016, in Orlando. John Raoux AP

Why Marco Rubio keeps talking about the Iran nuclear deal

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