Nuclear medicine experts are frustrated at the continued holdup of the American Medical Isotopes Production Act in the Senate. The delay is being caused by Sen. Kit Bond, R-Mo., who said the bill, which would support the domestic production of medical isotopes and cut off U.S. exports of highly enriched uranium, could endanger isotope supply in the country. "We don't think this is a bill that would cripple us," countered Dr. Michael Graham, past president of SNM. "It's a fairly unique opportunity for us to build a domestic isotope supply."