ROUGH CUT (NO REPORTER NARRATION)<br/> <br />STORY: U.S. President Barack Obama and First Lady Michelle Obama walk Pennsylvania Avenue as the presidential motorcade heads towards the White House.<br/> <br />The motorcade follows Obama's ceremonial swearing-in at the U.S. Capitol.<br/> <br />Obama had a formal swearing-in on Sunday at the White House because of a constitutional requirement that the president take the oath on January 20. Rather than stage the full inauguration on a Sunday, the main public events were put off until Monday.
