Craig, going back to my analogy of the squeaky wheel getting greased, here's my suggestion if people are serious about revisiting lead for waterfowl:
1. As already mentioned, try to get DU on your side.
2. Get the NRA on your side.
At which point it's no longer a tiny training wheel off a bike, but a great big wheel off a locomotive. And that train just might make it down the track. You've got the nation's biggest gun group and the nation's biggest waterfowl group. IMO, that could easily grab the attention of the current administration.
The NRA might be easier than DU. And if the NRA were to jump aboard, DU might be more likely to come aboard as well.
Off to hunt quail for a few days. Will be interesting to see how the pot simmers on this one.