Whakaotihia te rerenga e whai ake nei: I muri i tana tohu i te kura ture, i mahi a Barber hei kaiawhina mo te roia rohe mo New York County mai i te 1977 ki te 1981. I te 1981, ka uru atu a Barber ki te umanga ture a Looney & Grossman i Boston, ka noho hei hoa i te 1985 ka mahi hei hoa whakahaere mai i te 2001 ki te 2003. Ko tana mahi ture i arotahi ki nga kamupene tiimata me te whakawakanga tauhokohoko. I te wa o te pooti perehitini o te United States i te tau 2008, ko Barber te kaiwhakawhiwhi moni me te kaitautoko auau ki te
Ko Barack Obama 2008 te kaupapa perehitini. He mema a Barber o te Komiti Pūtea ā-Motu o Obama mō Amerika.