Having considerable experience with transgender in the military I can assure you every transgender person who comes to realize this is part of their life, will with no exceptions wish for it to occur early in life, and not in the military.  In 1971 Army I learned this lessen the hard way.  But to imply a soldier would take advantage of the military heathcare for gender reassignment surgery must statistically be nearly zero, or in any event negligible by every measure.  This politician should do his research to see how minimal this issue is, unless he wants to continue pandering fear and phobia for what I can only assume is politics or religion.