Article Photos: Time to act, Obama declares, taking oath 2nd time

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)

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)