Law of Guarantees
(Italian: La Legge delle Guarentigie)
A law passed by the Italian Parliament, 13 May 1871, granting certain prerogatives to the pope, and outlining the relations between the Italian State and the Church consequent to the occupation of Rome by the Piedmontese troops, 20 September 1870.
Some of its provisions were: inviolability of the Pope's person, an annuity of three and a quarter million lire ($622,425), extra-territoriality of the Vatican and Lateran Palaces and Castel Gandolfo.
This law was never accepted by Pius IX and his successors because, amongst other reasons, it presupposed the subjection of the pope to the Italian ruler, a status which could never be admitted by one whose supreme spiritual authority extends to the Universal Church.
New Catholic Dictionary