Editor’s note: Lt. Daniel Choi is an Iraq veteran and a West Point alumnus. He is facing discharge under "don't ask, don't tell," the 1993 law that bars openly gay and lesbian people from serving in the military. An estimated 65,000 LGBT Americans serve in the armed forces, according to the Urban Institute. [cnn-photo-caption image= … Continue reading Gay soldier: Obama's 'don't ask' pledge a reprinted IOU