The answer is clear. An employer who fires an individual for being homosexual or transgender fires that person for traits or actions it would not have questioned in members of a different sex. Sex plays a necessary and undisguisable role in the decision, exactly what Title VII forbids.
The answer is clear. It can often feel like this is the case, and yet, our legal and moral institutions fail us, utterly.
Today at least, by 6-3 vote, the Supreme Court makes clear that employment discrimination of LGTBQ people is not permitted by federal law.