Motley,  My guess the reversal on transgender policy is mostly about personnel/medical costs.  For instance, the military screens for hiv/aids prior to enlistment and mobilization (activating National Guard and Reserve troops), why?  The military doesn't want to buy the disease and its treatment, it costs a lot and immediately limits what a person can and can't do.  If the military allows transgenders into its ranks, folks could then enlist and demand sex change procedures and then get out, creating and continuous cycle of some folks enlisting only for the sex change.  I'm not really well informed on this issue but my guess is medical costs and treatments for a male to become a woman and woman to become a male is expensive and requires missed duty and continuous treatment to maintain the new gender status.