W delays .XXX

It seems that the Bush administration has petitions ICANN to delay the implementation of the new .xxx domain for a month. Of course, something designed to make porn easier to filter is being opposed by conservative groups. In one quote the Family Research Council says "There already is a law prohibiting them from selling hardcore porn on the Internet-anywhere on the Internet - yet they have been doing if for years." Is there? Can someone send me a citation?