The president who just replaced the late Michael Sata following a special election in January collapsed on Sunday and will seek medical care abroad.

The Republican letter to Iran highlights the long history of executive agreements -- and their grounding in domestic politics.

Presidential rankings tell us as much about ourselves as about the presidents.

Research on presidential gaffes suggest a president tripping and falling shouldn’t have much impact, but this is Zimbabwe, not the U.S.

Maybe because almost no one of consequence in the Democratic Party is talking seriously about his presidential prospects.

How far does the AUMF extend? That's not the president's call, alone.

Congress to president: Do our job. President to Congress: Sure thing!

Obama has plenty of legislative support -- on Iraq. Especially since he doesn't want Congress to do anything.

The cure for the malady just might be ... a third term!

The White House still stresses how few executive orders the president has issued - but the administrative presidency has many other tools

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