Rubuta ci gaba ga wannan sakin layi - Rivkin ya yi aiki a matsayin wakilin California mai girma ga Sanata John Kerry a taron kasa na Jam'iyyar Democrat na 2004 da kuma Barack Obama a taron kasa na Democrat na 2008. Rivkin shi ne babban jami'in kula da harkokin kudi na jihar California a lokacin yakin neman zaben shugaban kasa na Obama a shekarar 2008
kuma daya daga cikin manyan masu tara kudade.