Sen. Marco Rubio speaks at the Faith and Freedom Coalition's "Road to Majority" conference in 2013. Charles Dharapak/AP hide caption

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NPR's Morning Edition host Steve Inskeep interviews President Obama on Dec. 17 in the Oval Office, where they discussed U.S. involvement in the Middle East and the world as a whole. Kainaz Amaria/NPR hide caption

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Morning Edition host Steve Inskeep interviews President Obama on Dec. 17 in the Oval Office, where they discussed recent moves on Cuba and immigration, and prospects for cooperation with a GOP-dominated Congress. Kainaz Amaria/NPR hide caption

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Sen. Elizabeth Warren, D-Mass. (right), a member of the Senate banking committee, and Rep. Maxine Waters, D-Calif., ranking member of the House financial services committee, express their outrage to reporters that a $1.1 trillion spending bill that was passed in Congress contains changes to the 2010 Dodd-Frank law that regulates complex financial instruments known as derivatives. J. Scott Applewhite/AP hide caption

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The number of grandparents living with their grandchildren is up sharply. Stephanie Wunderlich/Getty Images/Ikon Images hide caption

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Sen. Bernie Sanders, an independent, says "the average person is working longer hours, lower wages, and they do not see any political party standing up and fighting for their rights." Win McNamee/Getty Images hide caption

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