That's the thing. The bishops should work on persuading, not on making the law do their work for them.  But people are  not persuaded.  And why should they even listen when something like 98% of people think artificial birth control is a smart and responsible choice if you shouldn't have a child, but the bishops treat it like it was as bad as strangling your 6-month old. You want fewer abortions? Help people get birth control that works.