Comment by dogleash

> The arguments I've heard against it are almost all slippery-slope (e.g. "they're gonna do this first, and then add ID requirements next year, because that's what I fear will happen.")

And the arguments for it don't promise to fight tooth and nail not to make sure it's not slippery. If the slope does turn out to be slippery, today's proponents will be tomorrow's Hindsight Harrys (e.g. "the cat's already out of the bag, if you cared so much you should have fought this back when we all saw it coming").