Cal. Gov. Code § 12428

In the event either the Governor or the Legislature should obtain federal approval to transfer programs receiving federal support for the mentally retarded or mentally disordered from one state department to another state department under the provisions of Public Law 90-577 (Intergovernmental Cooperation Act of 1968), the State Controller shall, upon approval of the Director of Finance, transfer to a state department designated by the Governor such parts of the appropriation of the other state departments that are related to mentally retarded or mentally disordered programs, provided further, that such transfer shall enable the state to make maximum utilization of available state and federal funds.