President Obama sworn in for 4 more years in office in intimate ceremony

Once the celebrations are over, Obama will plunge into a second-term agenda still dominated by the economy, which slowly churned out of recession during his first four years in office. The president will also try to cement his legacy with sweeping domestic changes, pledging to achieve both an immigration overhaul and stricter gun laws despite opposition from a divided Congress.

But for one weekend at least, Washington was putting politics aside. Obama called the nation's inaugural traditions "a symbol of how our democracy works and how we peacefully transfer power."

"But it should also be an affirmation that we're all in this together," he said Saturday, as he opened a weekend of inaugural activities at a Washington elementary school.

Obama and Biden were to address supporters Sunday evening at an inaugural reception.

The president planned to save his most expansive remarks for Monday's inaugural address to the crowd gathered on the Mall and millions more watching across the country and the world. Obama started working on the speech in early December and was still tinkering with it into the weekend, aides said.

Local officials were busy touching up Washington for all the hundreds of thousands of guests arriving for Monday's swearing-in. Work crews were trimming overgrown grass and trash from walkways along city underpasses, erecting first aid tents and setting up traffic detours. Swarms of tourists easily roamed city streets Sunday ahead of the pedestrian gridlock sure to come with Monday's full inaugural program.

The president's address will set the stage for the policy objectives he seeks to achieve in his second term, including speeding up the economic recovery, passing comprehensive immigration and gun control measures and ending the war in Afghanistan. Aides said Obama would save the specifics of those agenda items for his Feb. 12 State of the Union address.

The president launched a weekend of inaugural activities Saturday by heading up a National Day of Service. Along with his family, Obama helped hundreds of volunteers spruce up a Washington area elementary school.

Obama wore rubber gloves, picked up a paint brush and helped volunteers stain a bookshelf.

Obama added the service event to the inaugural schedule in 2009 and is hoping it becomes a tradition followed for future presidents.

Mrs. Obama, speaking to volunteers Sunday, espoused the importance of giving back in the midst of the weekend of pomp, circumstance and celebration.

"The reason why we're here, why we're standing here, why we're able to celebrate this weekend is because a lot of people worked hard and supported us, and we've got a job to do and this is a symbol of the kind of work that we need to be doing the next four years," Michelle Obama said at Burrville Elementary.

Associated Press writers Darlene Superville, Josh Lederman, Matthew Daly and Nancy Benac contributed to this report.

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