High Quality Content by WIKIPEDIA articles! The Foreign Sovereign Immunities Act (FSIA) of 1976 is a United States law, codified at Title 28, §§ 1330, 1332, 1391(f), 1441(d), and 1602-1611 of the United States Code, that establishes the limitations as to whether a foreign sovereign nation (or its political subdivisions, agencies, or instrumentalities) may be sued in U.S. courts—federal or state. It also establishes specific procedures for service of process and attachment of property for proceedings against a Foreign State. The FSIA provides the exclusive basis and means to bring a lawsuit against a foreign sovereign in the United States. It was signed into law by President Gerald Ford on October 21, 1976.