Dear Majority Leader Reid and Republican Leader McConnell:

We urge you and your colleagues in the Senate to act swiftly to continue consideration of rigorous Iran sanctions legislation.

We believe that as the United States negotiates with the P5+1 group and Tehran, it is critical to maximize U.S. leverage against the Iranian regime. The possiblity of tighter sanctions will enhance our leverage in the nuclear standoff between Iran's Supreme Leader and the international community. Despite Hassan Rouhani's attempt to portray Iran's government in a new light, the objective of the Iranian regime remains the same: the pursuit of a nuclear weapons capability.