Alwaght - Eleven U.S. senators introduced a resolution on Monday backing international negotiations on Iran's nuclear program and opposing legislation to impose tougher sanctions that President Barack Obama has pledged to veto, Reuters reported .
"Enacting new sanctions before the end of the negotiating period would gravely undermine our efforts to reach an agreement with Iran," Democratic Senator Dianne Feinstein, a leading co-sponsor of the resolution with Senator Chris Murphy, said in a statement .
The resolution's other co-sponsors include Democratic Senators Tom Carper, Dick Durbin, Al Franken, Martin Heinrich, Patrick Leahy, Jeff Merkley, John Tester and Sheldon Whitehouse, as well as Senator Angus King, an independent .
