diminishes or expands the trust responsibility of the United States to Indian tribes, or any legal obligation or remedy resulting from that responsibility;

alters, abridges, repeals, or affects any valid agreement between the Forest Service and an Indian tribe;

alters, abridges, diminishes, repeals, or affects any reserved or other right of an Indian tribe; or

alters, abridges, diminishes, repeals, or affects any other valid existing right relating to National Forest System land or other public land.