Cika wannan jumla: Barnes ya kasance babban mai ba da shawara kan manufofin cikin gida ga Sanata Barack Obama a lokacin da yake
Yaƙin neman zaɓe na 2008. Bayan zaben, Barnes ya yi aiki a kan kungiyar Obama-Biden Transition Project. Barnes ya yi aiki a matsayin co-director na Hukumar Review Working Group ga miƙa mulki.