Rep. Bob Goodlatte, R-Va., checks his phone before a hearing on Capitol Hill in September. Chip Somodevilla/Getty Images hide caption

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Sen. Marco Rubio, R-Fla., speaks during a fundraiser in Altoona, Iowa, on Nov. 17. He is delivering the GOP response to President Obama's State of the Union address Tuesday night. Charlie Neibergall/AP hide caption

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President Obama greets law enforcement officers after speaking on ideas to reduce gun violence at the Minneapolis Police Department Special Operations on Monday. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

Jeff Torgerson (top) and Dan Volkman browse the selection of rifles at Mainstream Firearms and Marine in Winona, Minn., on Monday. Andrew Link/Winona Daily News/AP hide caption

itoggle caption Andrew Link/Winona Daily News/AP

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

itoggle caption Charlie Neibergall/AP