During Bubba’s years my CSM told me once that serving in the military was like a driver’s license; a privilege not a right. You cannot have incapable drivers risking theirs’ and the lives of others on the road. In order to execute the military’s mission (kill the enemy and destroy their means to kill us) it needs individuals which can carry that mission with the least amount of risk to themselves and those who around them. This is why at MEPS you get a thorough physical and take written examinations; to discriminate between those mentally and physically capable to serve.
With this said, no one can claim a right to serve. I want someone to ask any of these 45 congress critters to fully and convincingly explain just how our National security is degraded by excluding cross-dressing, gender-confused and likely mentally unstable individuals. On the contrary, their antics, behavior, and likely SJW attitudes would become disruptions as well as hinder good order and discipline which erodes the ability of any military unit to conduct its wartime mission.