A lot of it is that they confuse the duties of "society" with the duties of "the State." This is an error the USCCB makes in almost every one of their policy pronouncements.
And the USCCB has no canonical authority to make these policy pronouncements. None whatsoever.
Do click over here (Link) to get the distinction I'm talking about.
The public policy wing of the USCCB should be disbanded.
Thanks for the explanation, bump for later read.