Kammala jumla mai zuwa: Bayan yin aiki na ɗan gajeren lokaci a matsayin mai ba da shawara a kan Sanata John Kerry na yakin neman zaben shugaban kasa na 2004, Lu ya fara aiki ga Barack Obama a 2005 a ofishin Majalisar Dattijan Amurka, inda Lu ya yi aiki a matsayin darektan majalisa da kuma mukaddashin shugaban ma'aikata. Bayan nasarar Obama
A lokacin yakin neman zaben shugaban kasa na 2008, an nada Lu a matsayin darektan zartarwa na Obama-Biden Transition Project. Lokacin da Obama ya nada Lu a matsayin Sakataren Ma'aikatar, "The New York Times" ya bayyana shi a matsayin "daya daga cikin manyan 'yan asalin Asiya na Amurka a gwamnatin Obama".