Kammala wannan magana: A lokacin yakin neman zaben Shugaba Obama a 2008, Tchen na daya daga cikin manyan masu tara kudi, inda ya tara dala dubu 200. Daga
Taron rantsar da Obama a shekarar 2009 har zuwa 5 ga Janairu, 2011, ita ce Daraktan Ofishin Fadar White House na Haɗin Jama'a, wanda a baya aka sani da Ofishin Hulɗa da Jama'a. Daga 2011 zuwa 2017, ta yi aiki a matsayin Mataimakin Shugaba Barack Obama; Shugaban Ma'aikata ga Uwargidan Shugaban Kasa Michelle Obama; kuma Babban Daraktan Majalisar Fadar White House kan Mata da 'Yan mata.