Obama Becomes 4th President to Visit Every State While in Office

When Air Force One touches down in South Dakota on Friday, President Barack Obama will mark a milestone: He'll have visited all of America's 50 states while in office.
Obama joins just three other presidents thus far — Bill Clinton, George H.W. Bush and Richard Nixon — to complete the task of visiting each of the states during their time as commander-in-chief.
Obama is making a quick stop in South Dakota to give the commencement address at Lake Area Technical Institute's graduation ceremony in Watertown.
Pete Souza, the chief official White House photographer, has accompanied Obama to document his visits, and has posted a gallery on Medium of stops in each state to lead up to the big 50 marker.