Pedzisa mutsara unotevera: Basa raKeenan rezvematongerwe enyika rakatanga nebasa rokudzidzira basa muhofisi yaTed Kennedy yeSeneti muna 2003, asati ava mubatsiri weSeneta wezvemitemo. Mushure mekushanda semubatsiri wevashandi veSeneti Hutano, Dzidzo, Vashandi uye Pension Committee, Keenan akatora dhigirii remasters mune zvematongerwo enyika paJohn F. Kennedy Chikoro cheHurumende, achidzidza kutaura nekutaura pasi paSteve Jarding. Muna 2007, Keenan akatora internship yezhizha mukunyora hurukuro pa
Mushandirapamwe waBarack Obama, achishanda pasi paJon Favreau, asati adzokera kuKennedy School kuzopedza gore rechipiri rezvidzidzo zvake. Akaramba achibatanidzwa mumushandirapamwe mukati megore, achibhururuka kuenda kuIowa panguva yezororo reKisimusi kuti abatsire mukugadzirira maIowa caucuses. Mushure mokunge Hillary Clinton abvuma muna June 2008, Keenan akadzoka semushandi wenguva yakazara mumushandirapamwe waObama.