This morning, the Obama administration clinched sufficient support for the Iran nuclear deal, as Senator Barbara Mikulski (D-MD) announced that she would support the deal. Mikulski is now the 34th senator to come out in favor of the Joint Comprehensive Plan of Action (JCPOA). As a result, should Obama veto a Senate disapproval of the deal, his veto would effectively be sustained. If the White House is able to secure the support of seven additional senators, Senate Democrats could launch a filibuster, in which case the resolution would never leave the Senate and Obama would not need to use his veto.