(Atlanta) -- Amnesty International USA (AIUSA) applauded today's decision by the Georgia State Board of Pardons and Paroles to grant a 90-day stay of execution to Troy Anthony Davis, who has spent 15 years on death row for a murder that he denies committing. Davis, 38, was convicted despite the lack of a murder weapon or physical evidence linking him to the crime."Let today begin a new day for truth and justice in Georgia," said Larry Cox, executive director of AIUSA. "We call upon the Georgia Parole Board to recognize that in the United States, one is innocent until proven guilty -- and in the absence of such proof, there is no acceptable choice but to grant clemency. The Board must recognize the flawed logic of executing a man who may be innocent."Troy Anthony Davis, who is African American, was convicted in 1991 of murdering Mark MacPhail, a white police officer. The prosecution based its case on the testimony of purported "witnesses," many of whom