Here's an interesting article about grazing on public lands in Eastern Washington State.
The many comments submitted by readers are even more educational than the article (if you ignore the usual knee-jerk name-calling by idiots).
The debate represents widely varying points of view, from recreational users, hikers and hunters, to cattle ranchers. It brings up a number of issues, including taxpayer subsidies to resource users, invasive species, grazing impact on the environment, abuses of the system, state politics and how that affects land-use decisions...you name it.
Cattle vs. wildlife at Whiskey Dick by Joel Connelly