Iowa Code Title I. State Sovereignty and Management [Chs. 1-38D] § 1.13. Existing trusts not affected

Nothing in section 1.12, this section, or section 1.14 or 1.15 shall authorize the alienation, encumbrance, or taxation of any real or personal property, including water rights, belonging to any Indian or Indian tribe, band, or community that is held in trust by the United States or is subject to a restriction against alienation imposed by the United States; or shall authorize regulation of the use of such property in a manner inconsistent with any federal treaty, agreement, or statute or with any regulation made pursuant thereto; or shall confer jurisdiction upon the state to adjudicate, in probate proceedings or otherwise, the ownership or right to possession of such property or any interest therein.