I think that's a bit simplistic... The problem is sheer numbers of people and cattle then versus now as well.
We're talking about Northen Nevada and Western Utah, Idaho, Montana and Wyoming...there is no "population explosion" in the region as far as I know. This is a fallacy of people that live in populated areas (mostly blue States). I'm sorry, I didn't mean to come across as rude. I think you are a great horsewoman and a insightful conservative. I just get very emotional (...oh yeah, lets leave emotion out of this) when there is talk about my homeland.
There may not be an explosion of people in those areas, but there certainly is a relative increase from the days of your forefathers, in the numbers of cattle being grazed to supply the demand of the rest of the country. I don't disparage them. We just need to be accurate about what the situation is.