US Sen. Elizabeth Warren (D-MA) participated in a reenacted swearing-in with her husband Bruce Mann and Vice President Joe Biden in the Old Senate Chamber. Biden swore in the newly-elected and re-elected senators earlier in the day on the floor of the current Senate chamber.

Rep. Joseph Kennedy III stood with his father former Congressman Joseph Patrick Kennedy II and fellow Massachusetts Congressman Edward J. Markey during the first session of the 113th Congress in the House Chambers.

Wisconsin Republican and former Vice Presidential nominee Rep. Paul Ryan voted for US Representative John Boehner as Speaker of the House during the opening session of the 113th Congress.

Clerks tallied the votes for US Speaker of the House for the 113th US House of Representatives during the opening session of Congress.

US Speaker of the House John Boehner took the oath of office after being re-elected as Speaker of the House during the opening session of the 113th Congress.

Members of the 113th Congress, many accompanied by family members, took the oath of office in the House of Representatives chamber.

House Minority Leader Nancy Pelosi (D-CA) stood with House Speaker John Boehner (R-OH) after presenting him with the gavel during the first session of the 113th Congress. Despite a rocky few weeks during the "fiscal cliff" fight, Boehner won re-election as Speaker of the House of Representatives and will lead Republicans as they take on the White House over federal spending.

Speaker of the House John Boehner swore in members of the 113th US House of Representatives during the opening session at the US Capitol in Washington, DC.

House Speaker John Boehner of Ohio, entered the House of Representatives chamber after surviving a roll call vote in the newly convened 113th Congress. He was escorted by House Majority Leader Eric Cantor of Va., House Minority Leader Nancy Pelosi of Calif., House Majority Whip Kevin McCarthy of Calif., and House Minority Whip Steny Hoyer of Md.

Vice President Joe Biden administered the Senate Oath to Sen. Bernard Sanders (I-VT) during a mock swearing in ceremony on Capitol Hill.

Newly elected Massachusetts Congressman Joseph Kennedy III (D) smiled as he joined the ranks of the 113th Congress.

Members of the 113th Congress bowed their heads in prayer as they convened in the Capitol in Washington.

The US Capitol was reflected in a car window on Jan. 3, the first day of the 113th Congress. Bruising fights within their own ranks over the "fiscal cliff" and aid for victims of Superstorm Sandy have left Republicans in the US House of Representatives more divided than ever as the new Congress is sworn in.

US House majority leader Eric Cantor of Virginia arrived for the 113th Congress prayer service at St. Peter's Catholic Church in Washington.

US House minority leader Nancy Pelosi of California arrived for the 113th Congress prayer service at St. Peter's Catholic Church in Washington.

US Representative Debbie Wasserman Schultz, Democrat of Florida, greeted female members of the Democratic Caucus.

Minority leader Nancy Pelosi stood with the Democratic women of the House to highlight the historic diversity of the House Democratic Caucus.

US Representative Tammy Duckworth of Illinois stood with female members of the Democratic Caucus during a photo op.

Retiring Massachusetts Rep. Barney Frank talked on Capitol Hill prior to the start of the 113th Congress. Joseph Kennedy III won Frank’s old US House seat in November.

US Vice President Joe Biden greeted Illinois Senator Mark Kirk upon his return to the Senate a year after a stroke affected the right side of his brain. Kirk spent a year relearning how to walk in intensive physical therapy.

Sen. Kirk of Illinois was welcomed by US Vice President Joe Biden and his colleagues on the steps of the Senate a year after suffering a stroke last January.

Speaker of the House John Boehner swears in members of the 113th US House of Representatives during the opening session at the US Capitol in Washington, DC, on January 3, 2013. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images