While it would be great to have paddling in Yellowstone, it seems there was a recent similar bill that had paddling in Yellowstone but also included lots of environmentally disastrous things along with it. I don't remember the details but it was kind of like, "Hey we'll open up Yellowstone to paddlers, and also open up strip mining in Grand Teton Park!"
Does anyone know any details behind the bill the OP is talking about? Hopefully it's not something designed to pit one group of conservation/recreationalists against another, like the one I'm thinking of seemed to be.
As long as it doesn't come with nasty strings attached, that would be great.
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse