Jim Burroway provides more background:
This case isn’t the first time we’ve seen researchers suggest that trying to prevent homosexuality is an ethically defensible position. In 2001, Aaron Greenberg and the controversial J. Michael Baily, both of Northwestern University, published a paper in the Archives of Sexual Behavior noting that “As we learn more about the causes of sexual orientation, the likelihood increases that parents will one day be able to select the orientation of their children.” They gave a number of reasons why parents might seek to prevent homosexuality in their children or even abort a fetus if a test were to determine that the fetus were homosexual. Interestingly, they deny that the reasons are based on heterosexism, yet go on to raise a number of heteronormative reasons why parents might want to abort or treat gay fetuses...Of course, many on the religious right would still condemn all abortions regardless of the reason. But for them, finding a medical “cure” for homosexuality would be perfectly acceptable.