Turn the land over to the states, let State government decide what to do with it politically.
That way if California, Oregon, and Washington want to triple themselves let them.
The rest of the western states should be permitted to utilize their own resources to develop just like the eastern states.
Even if they do opt to maintain large scale wilderness preserves there is no reason we can’t continue to extract natural resources from such areas left otherwise undeveloped.
Natural resource extraction is relatively low footprint and its non-permanent in that the lands wild life value is almost unchanged after the mine or well has been retired.
Usually its hardly effected even when the mine or well is in uses.
It is urban development that causes natural habit loss, not resource extraction.
Somehow it’s expensive to manage empty land. States don’t want to pony up the $$$$ when uncle sugar will do it. ;-)