Bayan kammala karatunsa, ya zama lauyan kare hakkin bil'adama kuma malamin ilimi, yana koyar da dokar tsarin mulki a Jami'ar Chicago Law School daga 1992 zuwa 2004. Ya wakilci gundumar 13 na tsawon shekaru uku a majalisar dattijai ta Illinois daga 1997 zuwa 2004 lokacin da ya yi takarar majalisar dattijan Amurka. Ya sami kulawa ta kasa a 2004 tare da nasararsa na farko a watan Maris, jawabinsa na Babban Taron Demokradiyya, da kuma zabensa na watan Nuwamba zuwa majalisar dattijai. A shekara ta 2008, an zabi shi a matsayin shugaban kasa shekara guda bayan yakin neman zabensa kuma ya fara yakin neman zabe bayan yakin neman zabe na farko da Clinton. An zabe shi a kan Jam'iyyar Republican John McCain kuma an kaddamar da shi a ranar 20 ga watan Janairu, 2009. Daga baya an kira shi Hillary Clinton, wanda ya lashe kyautar Nobel Peace Prize a shekarar 1988.
ya yi karatu a Harvard Law School