If you want to disarm the liberals, just point out that if homosexuality could be detected in utero that you would be against those abortions, and ask them if they would agree to make those abortions illegal.

I have yet to find a heterosexual liberal who doesn’t love abortion rights more than gays. So this argument is a great way to make them squirm and to point out how ridiculous it is for them to label you as a homophobe. After all, they think it should be legal to destroy gays in the womb (even hypothetically) while you think they should be protected.

The most I’ve ever seen them say in response is that I’m against all abortions, so specific protections for gays isn’t meaningful. But I point out that if this was the only restriction made that I’d favor it.

It also forces them to reconsider their pro-abortion views, because it points out how the unborn are real human beings. That is one reason they fight any exceptions, even for gender selection abortions. They know that once you concede the humanity of the unborn for any reason then other abortions wouldn’t be justified.