Bill to make marrying your first cousin illegal in Tennessee passes but not without a fight

I think it's actually hypocritical to not allow an incestuous marriage. Plaintiffs in Obergefell v. Hodges based most of their arguments on the idea that marriage is about love, not children. The argument against siblings or first cousins marrying is really because it's a taboo. Yes, a straight couple could have a child with serious defects but lots of other, unrelated people, also have genes that would create a child with serious defects.