The future of a landmark nuclear deal with Iran hinges partly on the votes of about a dozen U.S. senators, mostly Democrats, who will be key players in deciding whether a resolution of disapproval advances out of Congress.
So far, opponents of the deal don’t appear to have enough support in the Senate to reach the 67-vote supermajority needed to override a presidential veto. President Obama has vowed to veto any resolution of disapproval that Congress passes.
But now the big question is whether Republicans and other critics of the deal can even muster the 60 votes need to pass a resolution in the first place.