Canonum De Ius Positivum
Canons of Positive Law
VII. Law
7.6 Creation of Law
Article 281 - Statute
Canon 3101 (link)
No Statute may be perpetual. Any Statute which precludes its abrogation is void from the beginning.
Canon 3102 (link)
Canon 3104 (link)
No Statute may seek to convey Property which is not in the control and possession of the Juridic Person under whose laws it is promulgated. Any Statute that seeks to claim or convey Property which is not in possession or control of the Juridic Person who issued it is automatically null and void from the beginning.
Canon 3106 (link)
Any Statute founded on fraud is unenforceable as law.