Groundbreaking Resolution Reflects Consensus that Policy is Outdated While Dismissing Military’s Rationale for Transgender Exclusion By Melanie Nathan,  June 09, 2015. The American Medical Association (AMA), the nation’s oldest and largest physicians group with nearly 220,000 members, made history today by passing a resolution declaring that “there is no medically valid reason to exclude transgender … More Groundbreaking AMA Resolution No Medically Valid Reason for Military’s Transgender Ban