President Obama takes the oath of office for a second term - KTIV News 4 Sioux City IA: News, Weather and Sports

President Barack Obama took his second oath of office Monday.  In his speech afterwards, Obama said "we must act" even if our work is imperfect. He says we cannot afford to delay.  In a message that could be aimed at the divided Congress where battles await him in his second term, Obama is cautioning against mistaking absolutism for principle, substituting spectacle for politics or treating "name-calling as reasoned debate."

Even so, Obama says that today's accomplishments will be partial, and it will be up to people four, 40 or even 400 years from now to advance them further.  The president spoke at the U.S. Capitol after taking his public oath of office for his second term.

After a lunch with dignitaries, Obama joined the inaugural parade from Capitol Hill to the White House celebrating the start of his second term.  Obama, Vice President Joe Biden and their families were among more than 8,800 people, floats and marching bands participating in the late-starting parade that passed before viewing stands and bleachers lining the Pennsylvania Avenue route after Obama's public swearing-in ceremony.

Thousands of people had waited in security lines that stretched a block to gain access to parade-viewing spots accessible to the general public without a special ticket.