The White House is trying to press Congress to hold off imposing more sanctions on Iran. Sherman was testifying at a Senate Banking Committee. Her appeal comes as some hard-line US lawmakers push to impose more sanctions on Tehran. But the Obama administration has so far persuaded them to hold off, saying more action could harm ongoing talks with Iran over its nuclear energy program. Tehran has warned that any new US sanctions will kill a deal between Iran and the five permanganate members of the UN Security Council plus Germany in Geneva. Show Less >>