Votes for Homosexual "Marriage" in Holland, Belgium, Canada and Spain "Legally Binding Precedent" for U.S.?

Tom McKenna at Confutatis Maledictis speculates that recent votes in favor of homosexual simulated marriage in the Netherlands, Belgium, Canada, and Spain will no doubt "be cited soon in a Supreme Court opinion as 'precedent' supporting a hitherto unknown but suddenly discovered substantive due process right to homosexual 'marriage.' "