California Code, Code of Civil Procedure - CCP § 703.060

(a) The Legislature finds and declares that generally persons who enter into contracts do not do so in reliance on an assumption that the exemptions in effect at the time of the contract will govern enforcement of any judgment based on the contract, that liens imposed on property are imposed not as a matter of right but as a matter of privilege granted by statute for purposes of priority, that no vested rights with respect to exemptions are created by the making of a contract or imposition of a lien, that application of exemptions and exemption procedures in effect at the time of enforcement of a judgment is essential to the proper balance between the rights of judgment debtors and judgment creditors and has a minimal effect on the economic stability essential for the maintenance of private and public faith in commercial matters, and that it is the policy of the state to treat all judgment debtors equally with respect to exemptions and exemption procedures in effect at the time of enforcement of a money judgment. To this end, the Legislature reserves the right to repeal, alter, or add to the exemptions and the procedures therefor at any time and intends, unless otherwise provided by statute, that any repeals, alterations, or additions apply upon their operative date to enforcement of all money judgments, whether based upon tort, contract, or other legal theory or cause of action that arose before or after the operative date of the repeals, alterations, or additions, whether the judgment was entered before or after the operative date of the repeals, alterations, or additions.

(b) All contracts shall be deemed to have been made and all liens on property shall be deemed to have been created in recognition of the power of the state to repeal, alter, and add to statutes providing for liens and exemptions from the enforcement of money judgments.