Hostages captured after the 1979 siege on the US Embassy in Tehran are seen in this undated file photo.Former American hostage Barry Rosen, held by student extremists at the U.S. Embassy in Tehran for more than a year, said Monday it would be an “outrage” and “disgrace” if Washington gave a visa to one of the militants recently named by Iran as its new U.N. ambassador. “It may be a precedent but if the president and the Congress don't condemn this act by the Islamic Republic, then our captivity and suffering for 444 days at the hands of Iran was...