Update: After this broadcast, Senator Barbara Mikulski of Maryland announced her support for the nuclear deal, making her the 34th senator to do so and ensuring the deal’s implementation.

Two more Democratic senators have backed the Iran nuclear deal, meaning the agreement is all but certain to gain passage through Congress. On Tuesday, Pennsylvania Senator Bob Casey and Delaware Senator Chris Coons came out in support of the historic accord between Iran and six world powers. Obama has said he will veto any resolution by Congress to block the deal. The White House is now only one vote short of the 34 required to uphold the veto.