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President Barack Obama, center and Beau Biden, Attorney of Deleware, right, watch as his father Joe Biden is sworn in at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Pablo Martinez Monsivais)

U.S. President Barack Obama waves before speaking during the presidential inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Justin Sullivan/Getty Images)

Singer Beyoncé performs the National Anthem during the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. EMMANUEL DUNAND/AFP/Getty Images

Spectators react on the National Mall during the 57th inauguration ceremonies for U.S. President Barack Obama and Vice President Joe Biden on the West front of the U.S. Capitol, in Washington January 21, 2013. REUTERS/Eric Thayer

Singer Beyoncé performs the National Anthem during the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. EMMANUEL DUNAND/AFP/Getty Images

US President Barack Obama greets singer Kelly Clarkson (C) after Obama took the oath of office during the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. The oath was administered by US Supreme Court Chief Justice John Roberts. BRENDAN SMIALOWSKI/AFP/Getty Images

Beyonce starts singing the U.S. National Anthem as President Barack Obama (R) and Senator Charles Schumer (D-NY) listen during swearing-in ceremonies on the West front of the U.S Capitol in Washington, January 21, 2013. REUTERS/Jim Bourg

Kelly Clarkson waves after singing "My Country 'Tis of Thee" during swearing-in ceremonies for U.S. President Barack Obama on the West front of the U.S Capitol in Washington, January 21, 2013. REUTERS/Jason Reed

A boy is seen on the National Mall during the 57th inauguration ceremonies for U.S. President Barack Obama and Vice President Joe Biden on the West front of the U.S. Capitol, in Washington January 21, 2013. REUTERS/Eric Thayer

Singer Kelly Clarkson is kissed by U.S. President Barack Obama after her performance during inauguration ceremonies in Washington, January 21, 2013. REUTERS/Brian Snyder

Kelly Clarkson sings "My Country 'Tis of Thee" during swearing-in ceremonies for U.S. President Barack Obama on the West front of the U.S Capitol in Washington, January 21, 2013. REUTERS/Jason Reed

President Barack Obama, followed by, form left, Sen. Charles Schumer, D-N.Y., left, chairman of the Joint Congressional Committee on Inaugural Ceremonies, House Majority Leader Eric Cantor of Va., and Sen. Lamar Alexander, R-Tenn., walks through the Capitol in Washington, Monday, Jan. 21, 2013, for his ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Molly Riley, Pool)

US President Barack Obama gives his inauguration speech at the US Capitol on January 21, 2013 in Washington, DC. EMMANUEL DUNAND/AFP/Getty Images

US President Barack Obama takes the oath of office in front of (L-R) First Lady Michelle Obama, daughters Malia and Sasha during the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. US Chief Justice John Roberts administered the oath. JEWEL SAMAD/AFP/Getty Images

US President Barack Obama(L) embraces US Vice President Joe Biden after taking the oath of office during the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. The oath was administered by US Supreme Court Chief Justice John Roberts, Jr. SAUL LOEB/AFP/Getty Images

US President Barack Obama takes the oath of office during the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. JEWEL SAMAD/AFP/Getty Images

U.S. President Barack Obama gives his inauguration address during the public ceremonial inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Rob Carr/Getty Images)

President Barack Obama greets Secretary of State Hillary Rodham Clinton and former President Bill Clinton on the West Front of the Capitol in Washington, Monday, Jan. 21, 2013, before Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Win McNamee, Pool)

U.S. President Barack Obama walks through the corridor to the west door of the U.S. Capitol before being sworn in at the presidential inauguration on the West Front of the U.S. Capitol in Washington January 21, 2013. REUTERS/Molly Riley/Pool

U.S. President Barack Obama prepares to embrace first lady Michelle Obama after reciting his oath of office as daughter Malia (R) looks on during inauguration ceremonies on the West front of the U.S. Capitol in Washington, January 21, 2013. REUTERS/Jason Reed

U.S. President Barack Obama (L) is sworn in by Supreme Court Justice John Roberts, as first lady Michelle Obama looks on during inauguration ceremonies in Washington, January 21, 2013. REUTERS/Kevin Lamarque

Vice President Joe Biden (L) takes the oath from Supreme Court of the US Justice Sonya Sotomayor (2nd L) as Biden's wife Dr. Jill Biden holds the bible during swearing-in ceremonies on the West front of the U.S Capitol in Washington, January 21, 2013. REUTERS/Kevin Lamarque

Actress Eva Longoria arrives on the West Front of the Capitol in Washington, Monday, Jan. 21, 2013, for the Presidential Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Win McNamee, Pool)

First lady Michelle Obama arrives at the ceremonial swearing-in of President Barack Obama at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Pablo Martinez Monsivais)

Sasha(L),Malia(C) and Michelle Obama arrive for cermonies in which US President Barack Obama will take the oath of office during the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. The oath is to be administered by Chief Justice John Roberts. STAN HONDA/AFP/Getty Images

US President Barack Obama and US Democratic Senator from New York Chuck Schumer, the chairman of the Joint Congressional Committee on Inaugural Ceremonies, leave the White House on January 21, 2013 for the US Capitol in Washington, DC, for the ceremonial swearing in of the president and vice president to a second term in office. ROD LAMKEY JR./AFP/Getty Images

Vice President Joe Biden arrives for the 57th Presidential Inauguration ceremonial swearing-in of President Barack Obama at the US Capitol on January 21, 2013 in Washington, DC. The oath is to be administered by US Supreme Court Chief Justice John Roberts, Jr. JEWEL SAMAD/AFP/Getty Images

US Frist Lady Michelle Obama arrives with daughters Sasha (L) and Malia for the 57th Presidential Inauguration on January 21, 2013. US President Barack Obama will be ceremonially sworn in for a second term. EMMANUEL DUNAND/AFP/Getty Images

First daughters Sasha (L) and Malia arrive with their grand-mother, Marian Shields Robinson for the 57th Presidential Inauguration ceremonial swearing-in of President Barack Obama at the US Capitol on January 21, 2013 in Washington, DC. The oath is to be administered by US Supreme Court Chief Justice John Roberts, Jr. JEWEL SAMAD/AFP/Getty Images

Former Republican Vice Presidential candidate Paul Ryan arrives for the 57th Presidential Inauguration ceremonial swearing-in at the US Capitol on January 21, 2013 in Washington, DC. EMMANUEL DUNAND/AFP/Getty Images

People gather for the presidential inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Rob Carr/Getty Images)

U.S. Secretary of State Hillary Clinton greets Secretary of Defense Leon Panetta during the presidential inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by John Moore/Getty Images)

President Barack Obama and first lady Michelle Obama ride up Pennsylvania Avenue in the presidential motorcade towards the U.S. Capitol in Washington, Monday, Jan. 21, 2013, ahead of his ceremonial swearing in during the 57th Presidential Inauguration. (AP Photo/Charles Dharapak)

Former U.S. President Bill Clinton and Secretary of State Hillary Clinton arrive for the presidential inauguration on the West Front of the U.S. Capitol in Washington January 21, 2013. REUTERS/Win McNamee/Pool

Former U.S. President Bill Clinton arrives for the presidential inauguration on the West Front of the U.S. Capitol in Washington January 21, 2013. REUTERS/Win McNamee/Pool

U.S. President Barack Obama's motorcade drives down Pennsylvania Avenue en route to the U.S. Capitol prior to inauguration ceremonies in Washington, January 21, 2013. REUTERS/Brian Snyder

The Washington Monument is pictured, with crowds on the Mall before the start of swearing-in ceremonies for U.S. President Barack Obama on the West front of the U.S Capitol in Washington, January 21, 2013. REUTERS/Rick Wilking

Sen. John McCain, R-Ariz. arrives on the West Front of the Capitol in Washington, Monday, Jan. 21, 2013, for the Presidential Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Win McNamee, Pool)

House Budget Committee Chairman Rep. Paul Ryan, R-Wis. arrives on the West Front of the Capitol in Washington, Monday, Jan. 21, 2013, for the Presidential Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Win McNamee, Pool)

President Barack Obama walks with daughter Sasha as they leave St. John's Church in Washington, Monday, Jan. 21, 2013, after attending a church service during the 57th Presidential Inauguration. (AP Photo/Jacquelyn Martin)

First lady Michelle Obama and daughter Malia say goodbye to Rev. Luis Leon as they leave St. John's Church in Washington, Monday, Jan. 21, 2013, after a church service during the 57th Presidential Inauguration. (AP Photo/Jacquelyn Martin)

First lady Michelle Obama is greeted by Rev. Luis Leon at St. John's Church in Washington, Monday, Jan. 21, 2013, as the first family arrived for a church service during the 57th Presidential Inauguration. (AP Photo/Jacquelyn Martin)

President Barack Obama supporters wave American flags on the National Mall in Washington, Monday, Jan. 21, 2013, prior to the start of President Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. ( AP Photo/Jose Luis Magana)

A vendor sells newspapers at the 57th Presidential Inauguration on January 21, 2013. US President Barack Obama was sworn in for a second term. MLADEN ANTONOV/AFP/Getty Images

Faith leaders arrive for the 57th Presidential Inauguration ceremonial swearing-in of President Barack Obama at the US Capitol on January 21, 2013 in Washington, DC. The oath is to be administered by US Supreme Court Chief Justice John Roberts, Jr. JEWEL SAMAD/AFP/Getty Images

People attend the 57th Presidential Inauguration on January 21, 2013. US President Barack Obama will be sworn in for a second term. MLADEN ANTONOV/AFP/Getty Images

US President Barack Obama and his daughter Sasha leave St. John's Church on January 21, 2013 in Washington, DC, hours before Obama participates in a ceremonial swearing in for a second term in office. NICHOLAS KAMM/AFP/Getty Images

US President Barack Obama, First Lady Michelle Obama and her mother Marian Robinson are greeted by Rev. Luis Leon as they arrive at St. John's Church on January 21, 2013 in Washington, DC, hours before Obama participates in a ceremonial swearing in for a second term in office. AFP PHOTO/Nicholas KAMMNICHOLAS KAMM/AFP/Getty Images

Ednn Daniels uses binoculars as she and others gather near the U.S. Capitol building on the National Mall for the Inauguration ceremony on January 21, 2013 in Washington, DC. U.S. President Barack Obama will be ceremonially sworn in for his second term today. (Photo by Joe Raedle/Getty Images)

Lee University Choir from Cleveland, TN performs in the bleachers during the presidential inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Justin Sullivan/Getty Images)

Lee University Choir from Cleveland, TN waits in the bleachers during the presidential inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Justin Sullivan/Getty Images)

People sit on a wall at the National Mall for the ceremonial swearing-in on the West front of the U.S. Capitol in Washington January 21, 2013. REUTERS/Eric Thayer

U.S. President Barack Obama (L) arrives back at the White House with First Lady Michelle Obama (C) and Michelle Obama's mother Marian Robinson (R) in Washington January 21, 2013, after attending service at St. John's Episcopal Church on the day of his ceremonial swearing-in for his second term. REUTERS/Chris Kleponis

U.S. Vice President Joe Biden (L) and his wife, Dr. Jill Biden, talk with Reverend Luis Leon outside St. John's Church prior to inauguration ceremonies in Washington, January 21, 2013. REUTERS/Joe Skipper

John Mayer and Katy Perry arrives for the ceremonial swearing-in of President Barack Obama at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Carolyn Kaster)

President Barack Obama, with daughter Sasha, waves as they leave St. John's Church in Washington, Monday, Jan. 21, 2013, followed by first lady Michelle Obama, talking with Rev. Luis Leon, after attending a church service during the 57th Presidential Inauguration. (AP Photo/Jacquelyn Martin)