New feature: Women born women?

How is it possible for feminists to reconcile these two statements. The first, of course, is Simone de Beauvoir’s most famous quote:

“One is not born, but rather becomes, a woman.”

And the second is the entry policy for the upcoming conference, Radfem2012:

“We ask that RadFem 2012 be respected as a space where women born women living as women are able to meet and share information in a peaceful and safe environment.”

Laura has already posted about how wrong it is for a radical feminist conference to intentionally exclude trans women.

But now Helen G follows this up with an analysis of the language they’ve chosen to use. Does the phrase “women born women” make sense? Can it be used in all conscience by feminists, who in general are no fans of the idea that gender is innate.