now one new york democrat, grace meng has broken with her party and she says he will be voting no. >> it was a difficult decision for me. it is something that was very personal and weighed very heavily on my mind. >> reporter: grace meng has spent the last few weeks grappling with the nuclear agreement hammered out by the obama administration and announced july since then, protests opposing the agreement. arrests outside senator schumer's office who remains undecided and an expensive tv campaign urging congress to find a better deal. >> restrictions end after ten years. then iran could build another nuclear weapon in two months. >> after balancing everything i read and heard, i would not convinced they would not have their hands on a nuclear weapon after ten years. >> reporter: the president has promised to veto any resolution in congress opposing the agreement. so republicans are recruiting democrats in the hopes of making their decision veto proof. >> this is a false choice. >> iran will not be in a position to develop a nuclear bomb. >> reporter: the white house met privately this