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Lesbians of Mass DestructionThe empty case against Mary Cheney.

By William Saletan
Posted Saturday, Dec. 23, 2006, at 7:17 AM ET
Mary Cheney. Click image to expand.

Poor Dick Cheney. He was sure we'd find weapons of mass destruction in Iraq. We searched and searched, but he refused to give up.

Now he's discovering what it's like to be on the other end of such obtuse certainty. The conservative jihad has turned from Saddam to Sodom. Moralists are denouncing Cheney's pregnant daughter, Mary, for disclosing that she and her lesbian partner will raise the baby together. The moralists are confident that having two mommies is bad for kids. And no evidence to the contrary can dissuade them.

The 30-year search for proof that gay parents are destructive looks a lot like the hunt for WMD. The American Psychological Association has compiled abstracts of 67 studies. Some are plainly biased, and only the latest two or three have avoided the methodological flaws of earlier investigations. But after 67 tries, you'd expect the harm of gay parenting to show up somewhere. Yet in study after study, on measure after measure, kids turn out the same.

One study found that straight parents "made a greater effort to provide an opposite-sex role model for their children," but it doesn't say whether this affected the kids. Another says children raised by lesbian couples "were more likely to explore same-sex relationships," but it doesn't say they turned out gay. Other studies say they seldom do.

That's it. That's the evidence against gay parenthood. On the other hand, three studies say lesbians share child care more equally than straight couples do. Others conclude that lesbians are more satisfied with their relationships, that they show more "parenting awareness skills," that nonbiological lesbian moms "played a more active role in daily caretaking than did most fathers," and that their kids are less domineering and experience "greater warmth and interaction with their mother."

Such unwelcome findings haven't chastened the antigay lobby any more than they've chastened the Bush administration. If the direct evidence doesn't bear you out, look for indirect evidence. So conservatives have developed a subtler argument: On average, children do best when raised by their two married, biological parents.

Let's take this argument a piece at a time. It's true that two parents are better than one. It's also true that married parents are better than unmarried ones. But those aren't arguments against gay parenthood. They're arguments for gay marriage.

The biological part of the argument is more serious. On average, kids do better with parents than with stepparents. Focus on the Family, a leading moralist group, concludes that gay parenthood is unhealthy because "it is biologically impossible for a child living in a same-sex home to be living with both natural parents." Actually, that may change. Scientists recently produced a fertile adult mouse by combining, in one embryo, DNA from two females. But a lesbian who wants a genetic bond to her partner's baby doesn't have to wait for such technology. She can simply ask her brother to donate the sperm.

If you believe, as Focus on the Family does, that we should stop creating families in which one parent is biologically unrelated to the child, then gays are the least of your worries. By professional estimates, 40,000 babies are born each year from donated eggs or sperm. You want to stop nonbiological parenthood? Go chain yourself to a sperm bank.

For that matter, if you want every child to have the benefit of two parents, you're picking on the wrong Cheney. Mary's sister, Liz, just had her fifth kid. All things being equal, Liz's baby will get one-fifth as much parental attention as Mary's will get. But nobody complains about that.

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William Saletan is Slate's national correspondent and author of Bearing Right: How Conservatives Won the Abortion War.
Photograph of Mary Cheney by Freddie Lee/Fox News via Getty Images.
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