Leaders in the House and Senate have promised a vote on the agreement in mid-September to reject the nuclear deal between Iran and the United States, Germany, Britain, France, Russia and China.
To kill the agreement, opponents will need 60 votes in the Senate for a resolution of disapproval to overcome a filibuster by supporters. If they achieve that number, then they would require 3/4 majority in each house to override President Obama’s veto.
Schumer, the third-ranking Democrat in the Senate and likely Democratic leader in 2017, said he would he would vote for the resolution of disapproval and a veto override.