WASHINGTON President Barack Obama was officially sworn into office for a second term Sunday in a small ceremony at the White House as the nations capital geared up for a full inauguration on Monday.
Chief Justice John G. Roberts Jr. administered the oath to the 44th president as he was surrounded by only a few family members.
Obama will participate in the traditional -- and much more flashy inauguration ceremony on the steps of the U.S. Capitol Monday, following the lead of his predecessors whose first day in office, as prescribed by the Constitution, fell on a Sunday. Between 600,000 and 800,000 are expected to attend Monday, though the festivities have been scaled back from four years ago when 1.8 million poured into the city to witness the swearing in of the nations first black president.
Obama kicks off a second four-year term with ambitions to overhaul the nations tax code, rewrite immigration laws, tighten gun regulations and combat global warming.
But he faces a fractured political climate -- in part fueled by a divided Congress and nation -- as he combats an array of domestic and foreign policy challenges and goals from boasting a still lagging economy to winding down the war in Afghanistan.
On Sunday, there was little fanfare -- or acknowledgement of the daunting tasks that lay ahead -- at the brief ceremony.
Wearing a dark suit and blue tie, Obama stood next to First Lady Michelle Obama and daughters, Sasha, 11, and Malia, 14, just before noon in the small, oval-shaped Blue Room on the first floor that boasts views of the Washington Monument. About a dozen other relatives, including Obamas half-sister Maya Soetoro-Ng and Mrs. Obamas mother, Marian Robinson, and brother, Craig Robinson, watched from across the room.
I do solemnly swear that I will faithfully execute the office of president of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States so help me God, Obama recited.
As he uttered the words, Obama placed his left hand on a bible held by his wife and used by the first ladys grandmother, LaVaughn Delores Robinson, the first African-American woman manager of the bookstore at Moody Bible Institute in Chicago.
After the one-minute ceremony, Roberts and Obama shook hands. Congratulations, Mr. President, Roberts said.
Thank you, Mr. Chief Justice, Obama responded. Thank you so much.
Then, he hugged his wife and their daughters while his family clapped. Good job, Daddy, Sasha whispered.
Obama responded. I did it, before Sasha said You didnt mess up.
Obama followed presidential precedent in choosing the chief justice -- a man he did not support for the Supreme Court and who in 2009 fumbled the oath. That required a do-over in private the next day.
A small group of reporters and photographers were present in the room to witness the proceedings this time, following pressure from the media that journalists be allowed to independently record history. Millions around the globe also watched the event on television or the Internet. It is the seventh time that inauguration day has fallen on a Sunday, and the first since Ronald Reagans second term began in 1985.
All right, thank you everybody, Obama said before walking out of the room.
Just outside the White House, supporters snapped photos and counted down the minutes until the official start of Obamas second term.
Its 12:02. Hes officially sworn in, said Rhonda Savage of Ewing, N.J., who traveled to Washington with others teachers involved in Educators for Obama. Im excited to be here. Im just looking for a better United States - and maybe my taxes will go down."
Many of the streets along Mondays inaugural parade between the Capitol and the White House were closed to traffic and clogged with tourists enjoying a unseasonably warm day as they passed buildings draped in red, white and blue and bleachers, Jumbotrons and portable toilets.
Kim Hargett of Marshville, N.C. said she thought it was important to be in Washington for the weekend because last years election between Obama and Republican Mitt Romney was a turning point for the country.
People who support Obama - for the most part - are a really positive group of people who are focused on working together and honoring different viewpoints, Hargett said. I think thats what [Obama] is about.
The First Family worshipped Sunday morning at the historic Metropolitan African Methodist Episcopal Church, celebrating civil rights leader Martin Luther King Jr., whose birthday will be honored Monday across the nation.
The crowd lept to its feet with applause when Obama was introduced. He waved back and shook hands with those around him. In his sermon, the Rev. Ronald E. Braxton recalled the forward theme of Obamas reelection campaign in preaching about the exodus of the Israelites from Egypt and the need to move forward, "when forward is the only option."
Earlier Sunday, Vice President Joe Biden was sworn in at his official residence, the U.S. Naval Observatory, by Justice Sonia Sotomayor, the first Hispanic and fourth female judge to do so. The proceedings were moved up so Sotomayor could travel to New York for a book signing.
I want to explain to you what a wonderful honor it was, and how much out of her way the justice had to go. She is due in New York. She has to leave right now, Biden told about invited guests after the swearing-in. So I apologize: Were gonna walk out. Her cars waiting so she can catch a train I hope I havent caused her to miss.
Bidens wife, Jill, children and grandchildren gathered on a blue stage for the minutes-long ceremony where he recited the oath at 8:21 a.m. About 120 family members and friends were seated in a trio of rooms facing the stage.
The crowd included a smattering of elected officials from states that would be important if Biden decides to run for president in 2016, including Maggie Hassan, the governor of New Hampshire, which hosts the nations first presidential primary. Other guests include Reps. Jim Clyburn of South Carolina, Debbie Wasserman Schultz of Florida, Sen. Tim Kaine of Virginia and Sen. Bob Casey of Pennsylvania.
Ive known Joe Biden for over 25 years and to witness his private swearing in with his friends, close friends and family, with Justice Sonia Sotomayor, I dont think it gets any better, longtime Democratic strategist Donna Brazile said.
Obama and Biden began their day at Arlington National Cemetery, where they placed a large wreath adorned with red, white and blue ribbon in front of the Tomb of the Unknowns. They will end the day at a formal candlelight reception designed to thank high-dollars donors at the tony National Building Museum. Its one of several star-studded events at the 57th inauguration celebration that serve as a thank you for contributors helping to pick up the multi-million dollars tab of days of festivities.
Maya Prabhu contributed to this report.