Sen. Marco Rubio, R-Fla., addresses an event held by the American Enterprise Institute for Public Policy Research in January 2014 in Washington. Alex Wong/Getty Images hide caption

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Sen. Marco Rubio, R-Fla. J. Scott Applewhite/AP hide caption

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Sen. Rubio Says He Could Run For President Even If Jeb Bush Does

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Florida Sen. Marco Rubio, shown here at an event in Washington last month, spoke with NPR's Morning Edition about the country's economic challenges. Molly Riley/AP hide caption

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Rubio: Small Government Can Help Fix Economic Inequality

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Republican Sen. Marco Rubio of Florida (left) makes remarks at CPAC 2013 on March 14. Jim DeMint (right), president of the Heritage Foundation, is shown during a news conference on immigration reform on May 6 in Washington, D.C. DPA/Landov; AP hide caption

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Sen. Charles Schumer, D-N.Y. and Sen. Marco Rubio, R-Fla., (second and third from left) announced plans to work on a bipartisan immigration proposal with their colleagues on Jan. 28 on Capitol Hill. They were also some of the first to respond to a leaked White House proposal. Alex Wong/Getty Images hide caption

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Ohio State College Republicans await Mitt Romney's son, Craig, who canvassed with them in Columbus last October. Courtesy College Republicans at The Ohio State University hide caption

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College Republicans Offer GOP Advice For Winning Over Their Generation

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Sen. Marco Rubio, R-Fla, is among a bipartisan group of eight senators who this week announced a plan to overhaul the nation's immigration laws. Charlie Neibergall/AP hide caption

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What's Behind Rubio's 'Full Circle Back' On Immigration?

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Incoming Texas Sen. Ted Cruz, who spoke during the Republican National Convention this summer in Tampa, Fla., is among a number of minority politicians seen as rising stars in the GOP. Spencer Platt/Getty Images hide caption

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