An evangelical Republican who speaks out about being out.
"science points to some level of biological causation for sexual orientation"
If a biological basis is found, and if a prenatal test is then developed, and if a successful treatment to reverse the sexual orientation to heterosexual is ever developed, we would support its use as we should unapologetically support the use of any appropriate means to avoid sexual temptation and the inevitable effects of sin.
9. We must stop confusing the issues of moral responsibility and moral choice. We are all responsible for our sexual orientation, but that does not mean that we freely and consciously choose that orientation. We sin against homosexuals by insisting that sexual temptation and attraction are predominately chosen. We do not always (or even generally) choose our temptations. Nevertheless, we are absolutely responsible for what we do with sinful temptations, whatever our so-called sexual orientation.
10. Christians must be very careful not to claim that science can never prove a biological basis for sexual orientation. We can and must insist that no scientific finding can change the basic sinfulness of all homosexual behavior. The general trend of the research points to at least some biological factors behind sexual attraction, gender identity, and sexual orientation. This does not alter God's moral verdict on homosexual sin (or heterosexual sin, for that matter), but it does hold some promise that a deeper knowledge of homosexuality and its cause will allow for more effective ministries to those who struggle with this particular pattern of temptation. If such knowledge should ever be discovered, we should embrace it and use it for the greater good of humanity and for the greater glory of God.