The quick fix for all the earth's ills was the banning of lead shot. The trick has always been, find an easy target group without much clout and slap a ban on 'em - the duck hunters filled that bill nicely.
You and I both know, there are things that are dumped and pumped into our earth that makes a handful of lead shot child's play.
...but hey, these major foulers of the earth aren't easy targets and they fight back...and they will end-up killing you and the ducks too!