A new rule is in the works that would bar gay men from serving as anonymous sperm donors.
It would apply to any man who has engaged in homosexual sex in the previous five years.
The Food and Drug Administration is rejecting calls to scrap the provision, saying that such men collectively pose a higher-than-average risk of carrying the AIDS virus.
Critics claim the FDA is stigmatizing all homosexual men, when it should instead be adopting a screening process that focuses on high-risk sexual behavior by any would-be donor.
While there's disagreement over whether the guideline regarding homosexual men will have the force of law, most doctors and clinics are expected to observe it.