President Obama makes his final presidential speech to the nation on January 10, 2017 in Chicago, Illinois. First Lady Michelle Obama and their daughter smile listening to her husband's speech.

President Obama makes his final presidential speech to the nation on January 10, 2017 in Chicago, Illinois. First Lady Michelle Obama and their daughter smile listening to her husband's speech.

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Obama Offers Optimism -- And Warnings -- In Farewell Address

Popular but politically humbled, President Barack Obama said goodbye to the nation Tuesday night, declaring during his farewell address that he hasn't abandoned his vision of progressive change but warning that it now comes with a new set of caveats.