170.4—What is the effect of this part on existing tribal rights?

This part does not:
(a) Affect the sovereign immunity from suit enjoyed by tribes;
(b) Terminate or reduce the trust responsibility of the United States to tribes or individual Indians;
(c) Require a tribe to assume a program relating to the IRR Program; or
(d) Impede awards by other agencies of the United States or a State to tribes to administer programs under any other law.