I am English and havn't lived in the States for more than a decade, so I am not familiar with groups that support this change. As I said, there is the flyersrights.org organisation. I am not convinced Kate Hanni is in it for the best of motives, but here is the link for you to decide for yourself. Otherwise, I think active lobbying is all that can be done.
http://www.flyersrights.org/