So, they’re just a plain old lobbying group. Which explains why my email and phone calls have not yielded any useful results; so far, no calls back, no email responses, and the one time I reached a guy, he was too busy to say anything but that he doesn’t have any idea where they got my address, but that if I send him email, he can forward it to the guy who can take me off the list. (No, there is no way to reach the actual list manager.)
Other relevant links:
I’m still trying to find someone who has contacts there who are able to understand what “permission” and “bulk email” have to do with each other.