The act of state doctrine is a court-made (common law) doctrine that prohibits U.S. courts from judging the validity of the official acts of a foreign country that take place within that foreign country's borders.
In Iowa, as in other U.S. states, the act of state doctrine is recognized as a principle of federal common law rather than state statute. This doctrine dictates that Iowa courts, like all U.S. courts, generally will not question the validity of public acts performed by a recognized foreign sovereign within its own territory. The rationale behind this doctrine is to respect the sovereignty and avoid conflict with other nations. However, the application of the act of state doctrine is subject to certain exceptions and may be overridden by specific federal statutes or international agreements. It is important to note that while the doctrine is applied in federal and state courts, its contours and exceptions are primarily shaped by U.S. Supreme Court precedent and federal policy considerations.