Will Anglican Mainstream force the annulment of all marriages that fail to produce offspring?

They told me in Scripture classes that marriage causes pregnancy! It is quoted in The Christian Institute's article, courtesy of Anglican Mainstream, that same-sex couples are ineligible for marriage because “the truth is that marriage is a unique institution because it involves the process by which humanity reproduces itself — which is only through the union of male and female.”

THE PREREQUISITE TO MARRIAGE...