(d)
Protection of rights of Indians and Indian tribes
Nothing in this section shall be construed as abrogating, diminishing, or otherwise affecting—
(1)
the inherent rights of any Indian tribe;
(2)
the rights, express or implicit, of any Indian tribe which exist under treaties, Executive orders, and laws of the United States;
(3)
the inherent right of Indians to practice their religions; and
(4)
the right of Indians to practice their religions under any Federal or State law.