EPA

Elizabeth Warren, with husband Bruce Mann and Vice President Joe Biden, at a reenactment of her swearing-in today.

AP

Joseph Kennedy III, who is replacing Barney Frank as the representative for Mass. House District 4, smiled before his swearing-in.

EPA

Minority Leader Nancy Pelosi and Speaker John Boehner were reelected to their leadership posts.

Getty Images

The 113th Congress was sworn in.

AP

Mark Kirk, center, of Illinois, returned to the Senate after suffering a stroke.

AP

Joseph Kennedy III, accompanied by his father, Joseph Kennedy II, smiled before his swearing-in.