A former Qwest Communications International executive, appealing a conviction for insider trading, has alleged that the government withdrew opportunities for contracts worth hundreds of millions of dollars after Qwest refused to participate in an unidentified National Security Agency program that the company thought might be illegal. Former chief executive Joseph P. Nacchio, convicted in April of 19 counts of insider trading, said the NSA approached Qwest more than six months before the Sept. 11, 2001, attacks ... about participating in a warrantless surveillance program to gather information about Americans' phone records. In the court filings disclosed this week, Nacchio suggests that Qwest's refusal to take part in that program led the government to cancel a separate, lucrative contract with the NSA in retribution. He is using the allegation to try to show why his stock sale should not have been considered improper. He has claimed in court papers that he had been optimistic that Qwest would overcome weak sales because of the expected top-secret contract with the government. Nacchio's account, which places the NSA proposal at a meeting on Feb. 27, 2001, suggests that the Bush administration was seeking to enlist telecommunications firms in programs without court oversight before the terrorist attacks on New York and the Pentagon. The Sept. 11 attacks have been cited by the government as the main impetus for its warrantless surveillance efforts. In May 2006, USA Today reported that the NSA had been secretly collecting the phone-call records of tens of millions of Americans, using data provided by major telecom firms. Qwest, it reported, declined to participate because of fears that the program lacked legal standing.