Ari Shapiro

Almost all of the federal government's actions against terrorism — from drone strikes to the prison at Guantanamo Bay — are authorized by a single law: the Authorization for Use of Military Force.

Congress passed it just after the terrorist attacks of Sept. 11, 2001. Now, President Obama says he wants to revise the law, and ultimately repeal it.

President Obama often tells audiences that he has waged his last campaign. But that's not exactly true.

The White House is gearing up for a massive campaign this summer that will cover all 50 states, plus Washington, D.C. And the president's legacy may hinge on whether it succeeds or fails.

Organizing for Action — a group that formed out of President Obama's re-election campaign — has posted five tweets in the past week about climate change using the @BarackObama Twitter account.

The phrase "second term curse" is so familiar that it's become a cliche of American politics. Whether it's President Richard Nixon's resignation or President Bill Clinton's impeachment, presidents tend to have a tough time during the back half of an eight-year presidency.

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