Code of Federal Regulations Title 42. Public Health § 42.137.310 Are Self–Governance Tribes required to grant a limited waiver of their sovereign immunity to assume Federal environmental responsibilities under section 509 of the Act [25 U.S.C. 458aaa–8]?

Yes, but only as provided in this section. Unless Self–Governance Tribes consent to the jurisdiction of a court, Self–Governance Tribes are immune from civil lawsuits. Self–Governance Tribes electing to assume Federal environmental responsibilities under section 509 of the Act [25 U.S.C. 458aaa–8] must provide a limited waiver of sovereign immunity solely for the purpose of enforcing a Tribal certifying officer's environmental responsibilities, as set forth in this subpart. Self–Governance Tribes are not required to waive any other immunity.