Tuhia he haere tonu mo tenei whitianga - I whakapau kaha a Power i te 2005 ki te 2006 i te tari o te US Senator Barack Obama hei hoa kaupapa here a iwi ke, i reira i whakawhiwhia ai ia ki te whakaoho me te arataki i te hiahia o Obama ki te pakanga o Darfur. I mahi ia hei kaitohutohu matua mo te kaupapa here a-ao ki te kaupapa perehitini a Obama i te tau 2008
, engari i whakarerea i te wā o ngā pōtitanga tuatahi. I te tau 2009 i tohua ia e te Perehitini Obama ki tetahi tuunga i te Kaunihera Haumarutanga Motu, a i te tau 2013 ka tohua ia hei Kaikauwhau a te US ki te United Nations, he tuunga rangatiratanga.