Whakaotihia te rerenga e whai ake nei: I mahi ia i te kaupapa o te US Senator John Glenn (D-OH) i te 1984, i runga i te Capitol Hill i mua i te uru atu ki te umanga i whakatuhia e Bob Squier me William Knapp i te 1993. Ko ia te kaitohutohu me te kaiwhakahaere whakawhitiwhiti korero ki a Senator Bill Bradley (D-NJ), a ko ia te kaiwhakahaere matua mo tana kaupapa perehitini. I mahi ano a Dunn hei kaitohutohu mo te Kaunihera Evan Bayh (D-IN), te Tumuaki Nui o te Senate Tom Daschle (D-SD) me te kaiwhakahaere korero mo te kaupapa perehitini a Al Gore i te tau 2000. I te tau 2004, i whakaputahia e Anita nga papaho mo te Kaunihera Lloyd Doggett (D-TX). I te tau 2006 i utua ia e te Kaunihera o tera wa a Barack Obama ki te arahi i nga whakawhitiwhitinga korero me te rautaki mo tana komiti mahi torangapu, The Hopefund. Na tenei nekehanga i tohu ki te tokomaha e whakamahere ana a Obama ki te rere mo te perehitini. I a ia e tohutohu ana i a Hopefund me Obama i te tau 2006, i whai wāhi nui ia ki te whakarite mo te whakarewatanga o
Obama for America, a ka kawea mai e ia he maha o nga kaimahi matua ki te kaupapa a Obama i mahi tahi ai ia i nga tari o Bayh me Daschle.