Article Photos: Obama's campaign ends where it all began 3/6

  FILE - In this Jan. 3, 2008, file photo, then-Democratic presidential hopeful Sen. Barack Obama, D-Ill., waves to supporters at an after caucus rally in Des Moines, Iowa, after winning the Iowa democratic presidential caucus. He is joined by his wife Michelle and daughters Sasha and Malia. For President Barack Obama, it’s ending where it all began. Obama will close his 2012 campaign with a nighttime rally in Iowa, where his 2008 caucus victory jumpstarted his road to the White House. The president is expected to reflect back on the state’s pivotal role in his political rise during remarks delivered at the site of his first Iowa campaign headquarters. (AP Photo/M. Spencer Green, File)