you're more democratic senators throwing their support behind president Obama's nuclear deal with Iran Tuesday meeting Obama just one short of clinching his signature foreign policy goal senators Bob Casey of Pennsylvania and Chris current of Delaware saying they'll back video in the face of overwhelming opposition from Republicans and a multi million dollar lobbying campaign against it by groups backing Israel Obama need thirty four senators to back up his veto effect expected the Republican led Senate voted to reject the deal reining in Iran's nuclear program in exchange for a lifting crippling international sanctions