What is the sexual orientation of Tracy Chapman?
Tracy Chapman is openly gay.
she had a private affair with a female author in the mid 90's, and came out probably sometime after that.
I think you mistake "sexual orientation" with specific types of orientation. Sexual orientation is a part of every humans make up. A person can not have a sexual orientation. Your sexual orientation is what makes you gay, straight or bisexual. Homosexuality IS illegal in some countries. You can outlaw a behavior but you can't outlaw an urge or feeling.