Archbishop John C. Nienstedt: “The Minnesota Catholic Conference, made up of the seven Catholic bishops from the state, support this amendment not for prejudicial or political reasons, but rather for reasons that are theological, biological and pastoral.”
(Original news item.)
Lets assume for a second that the Archbishop's homophobia is not born of prejudicial or political reasons (which no intelligent person would believe for a second). That leaves his pseudo-humanist argument that it's about theology biology, and pastoral authority or care.
Theology isn't a useful factor here because there are many different theologies. Some theologies actually acknowledge the whole person and accept gay people as equal and normal. Shock! Aside from that theology is a useless guideline for public policy.
Biology has no relevance to gay marriage, or the legalization of it. The Archbishop still thinks he lives in a world where his distortions of modern science are actually relevant to society at large.
That leaves us with Pastoral authority or care. This only applies to Catholics. Leave the rest of us and public policy out of it.
(Shakes angry atheist fist up to the sky) Please recommend this post