"...demand a law making it illegal for men (males) to impregnate women they are not ready and willing to have a child with?"

Are you serious? Have you thought through this proposal?

Skipping over whether such a law would be constitutional (very doubtful), how exactly would it work? Would men have to post a bond before fornicating? Sign a contract? 

Please explain just how you envision this working. If you sincerely want the bishops to support it, you need to flesh out a concrete proposal, don't you think?