The veep's son helps make burgers while announcing a campaign for the World Food Program at Cava Mezze.
Which celeb did it best?
Mika Brzezinski, author of "Obsessed: America's Food Addiction -- and My Own," shared her 30-year battle with food addiction.
The Oscar-winning director stops in D.C. to speak to students and screen an episode his mini-series "The Untold History of the United States."
America Ferrera dishes about her new movie "Cesar Chavez" and which celebs would make good politicians.
Actor Lance Gross drew a large crowd at the Pentagon City mall on Saturday in support of domestic violence victims.
Philomena Lee heads to the Hill to discuss adoption laws with Sen. Claire McCaskill.
The Grammy-winning jazz vocalist calls for the release of all Guantanamo Bay prisoners during local concert.
The actress dines on raw vegan tacos and frets about the lack of nutritional options in the Senate cafeteria.