Lance Armstrong given deadline by United States Anti-Doping Agency to come clean Travis Tygart, the chief executive of the United States Anti-Doping Agency, will confirm the ultimatum on television in the US tonight having written to Armstrong earlier this week demanding that he "co-operate fully and truthfully" if he wishes to plea bargain. However, he told Usada that the cyclist will co-operate with efforts to clean up the sport, adding that it was the governing body and the World Anti-Doping Agency that should take the lead. Herman's letter said Armstrong would be willing to appear before the International Cycling Union's planned 'truth and reconciliation" commission. In a letter to Usada attorney William Bock, Herman said: "As you have candidly confirmed, Usada has no authority to investigate, prosecute or otherwise involve itself with the other 95 per cent of cycling competitors. Despite insisting publicly he is seeking a reduction of the life ban to eight years so he can compete in Masters Triathlon competitions and marathons Armstrong refused point blank to plea-bargain when Usada originally charged him last year. The disgraced former Tour de France winner also declined to offer detailed information to the anti-doping agency when he met with Usada in the new year after which he opted for his televised confession with Oprah Winfrey when he again expressed his wish to be granted a reduced ban from what he described as a "death sentence." In the interview Armstrong insisted he would "be the first through the door" for a proposed truth and reconciliation commission but such a body is still some way from being finalised and the degree of amnesty not yet decided. Usada is in any case insistent that it is still the correct forum for a full Armstrong confession. Tygart also said that Armstrong's denial that he doped during the 2009 and 2010 Tours was "just contrary to the evidence." Usada insists that blood tests taken from Armstrong then have a "one in a million chance" of being natural.