Do you even know how few people are actually transgender in the military? If you are worried that it will cost too much money, 0.5% of Americans are transgender. The military does take potential instabilities to war. It's called a draft. Ever heard of those? If a transgender knows that they are going to be unstable, they probably won't join.
And I do history. Did you know that military parades, hostility towards the press, demanding loyalty above anything else, firing civil servants, supporting Autocrats, using the presidency for self-enrichment and hostility towards intelligence agencies are all dictatorial tendencies?
Have a little guess who did these seven things (clue: 9x5). Also, what other countries think of the US is very important, as it gives a decent indication of how well the country is actually doing. And if supporters of the AfD support you (The AfD are literal Fascists, and they don't try and hide it), but key allies like Canada, Germany, France and Spain don't, you got a problem. This is an even bigger problem when countries like China and Russia now have a better view of you.