nature approach, sociology

The nature versus nurture approach to understanding sexual orientation ranges from genetic predispositions to learned behavior. It appears that most of the scientific community supports the notion that homosexuality has a genetic component while those that oppose gay rights believe it is learned behavior (therefore it can be unlearned or changed).

How have those that oppose gay rights might, if at all, change their position if it is found that there is some research that supports sexual orientation to be genetically driven (It should be noted that many biologists believe that confirmation of the genetic link to sexual orientation has been found through comparative studies of identical and fraternal twins but this information has not been widely accepted among skeptics)? Should sexual orientation be added as a protected category? Explain why or why not?