Yes, they have. It has hurt us in many different ways.
SPC Morlock.
PFC Bradley Manning
PFC Steven Greene.
All 'moral' waivers prior to entering the military. This isn't WWII where we need bodies.
In the old days, Manning would have been laughed out of the recruiting station.
I joined the Air Force during the 80s. On the way in for a regularly scheduled appointment with my recruiter, I passed a “flamboyant” classmate. When I asked the recruiter if he signed him up he replied, “You know that cat?” I told him he was in one of my classes at school. He told me he referred him to the Army recruiter. I never learned whether or not they signed him up.