California Code, Welfare and Institutions Code - WIC § 4461

(a) All expenses incurred in returning such persons to other states shall be paid by this state, the person, or his or her relatives, but the expense of returning residents of this state shall be borne by the state making the returns.

(b) The cost and expense incurred in effecting the transportation of the nonresident persons to the states in which they have residence shall be advanced from the funds appropriated for that purpose or, if necessary, from the money appropriated for the care of developmentally disabled persons upon vouchers approved by the Department of General Services.