Vice President Joe Biden greets people after speaking at the Metro Detroit AFL-CIO Labor Day Rally, Monday, Sept. 3, 2012, in Detroit. (AP Photo/Carolyn Kaster)

 

              Vice President Joe Biden greets people after speaking at the Metro Detroit AFL-CIO Labor Day Rally, Monday, Sept. 3, 2012, in Detroit. (AP Photo/Carolyn Kaster)
Vice President Joe Biden greets people after speaking at the Metro Detroit AFL-CIO Labor Day Rally, Monday, Sept. 3, 2012, in Detroit. (AP Photo/Carolyn Kaster)