US News and World Report has the story:
This is being pushed as an administrative rule, not a bill, so there isn't any vote on it. The policy change would give a great deal of latitude to BLM officials to shut down public lands for hunting and recreational shooting. Cabelas, Ducks Unlimited, and the National Wildlife Foundation (among others) are all protesting the change.
It appears at least one of the justifications they are using to try and shut down shooting is destruction of natural habitat by "range slobs."