Is it a crime for 20 yr old and a 30 yr old to have sex, NO!
Is it ILLEGAL for consenting adults to have sex, NO!
Sexual Liaisons between adults in those Professional Relationship capacities are wrong, and constitute an ethical breach of contract, and trust, but SEX is not a CRIMINAL act! You completely miss my point because you got your Namby Pamby on about the morality and ethics of certain relationships and equating these with "The Law".
Any sex between consensual adults is not "OK" anytime because of professional relationship issues and personal violations of trust. But again, not a criminal act!
You have no point.
Sex in all of these situations is illegal.
Not only does the law say it, the majority says it.
We refuse to be shouted down by perverts who wish people in authority to ba able to have sex with those under that authority.
You are in a small minority.
Even most of the left do not want the things you want.
You do not get to twist reality to fit your sexual desires.
There is a reason you are short of allies on this thread.
Its because you are dense, evasive, shrill, and just more connected to pornographic fantasies than to real life.
The things you want are damaging to real people.