Cal. Health & Safety Code § 33663

Notwithstanding any restrictions on investments contained in any laws, the state and all public officers, municipal corporations, political subdivisions, and public bodies, all banks, bankers, trust companies, savings banks and institutions, building and loan associations, savings and loan associations, investment companies, and other persons carrying on a banking business, all insurance companies, insurance associations, and other persons carrying on an insurance business, and all executors, administrators, guardians, conservators, trustees, and other fiduciaries may legally invest any sinking funds, money, or other funds belonging to them or within their control in any bonds or other obligations issued by an agency. Such bonds and other obligations are authorized security for all public deposits. It is one of the purposes of this part to authorize any persons, firms, corporations, associations, political subdivisions, bodies and officers, public and private, to use any funds owned or controlled by them, including, but not limited to, sinking, insurance, investment, retirement, compensation, pension, and trust funds, and funds held on deposit, for the purchase of any such bonds or other obligations. This part does not relieve any person, firm, or corporation from any duty of exercising reasonable care in selecting securities.