““shifts signal a slowing in momentum for the bill among Democrats, who have faced a full-court press from a number of top administration officials, including President Barack Obama and Secretary of State John Kerry. During Tuesday night’s State of the Union address, Obama vowed to veto the bill if it landed on his desk and urged Congress to let international talks play out. It’s already clear that Congress is reluctant to proceed on the issue. Senate Majority Leader Harry Reid (D-Nev.) has signaled an unwillingness to bring the sanctions bill to a vote, and in the House, party leaders have been meeting privately for weeks to figure out how to proceed. Talk in that chamber has centered on the possibility of voting on a non-binding resolution that would allow lawmakers to lay out their preferred endgame in Iran negotiations. Sen. Richard Blumenthal (D-Conn.) already said earlier this month that a vote on the bill was not needed during the interim agreement. Meanwhile, a spokeswoman for Sen. Ben Cardin (D-Md.) punted the matter to Reid. "Senator Cardin wants to see negotiations with Iran succeed. As for timing of the bill, it is and has always been up to the Majority Leader," Cardin spokeswoman Sue Walitsky said. Both of the bill’s main sponsors, Sens. Mark Kirk (R-Ill.) and Robert Menendez (D-N.J.), held their ground when asked for their reactions to Obama’s veto threat. “While the president promises to veto any new Iran sanctions legislation, the Iranians have already vetoed any dismantlement of their nuclear infrastructure,” Kirk said in a statement. On Tuesday night, just after the State of the Union had ended, Menendez said, "I’m not frustrated." He walked quickly into an elevator as he spoke, pushing the buttons and looking ready to be done with the conversation. "The president has every right to do what he wants." A spokesman for Sen. Michael Bennet (D-Colo.) said Wednesday that merely introducing the bill -- but not voting on it -- was helpful to negotiations. "Senator Bennet supports the President’s diplomatic efforts and would like them to succeed. The pertinent question isn't about when we vote on the bill, but whether its introduction is helpful to the negotiations. He believes it is," spokesman Adam Bozzi said. Not all senators agreed that a vote should be delayed. Offices for Sens. Jim Inhofe (R-Okla.) and Mike Johanns (R-Neb.) confirmed that the senators wanted to hold””