Penal Code § 11198

(a) Except as authorized by California statute, no city, county, city and county, or private entity shall cause to be brought into, housed in, confined in, or detained in this state any person sentenced to serve a criminal commitment under the authority of any jurisdiction outside of California.

(b) It is the intent of the Legislature that this act shall neither prohibit nor authorize the confinement of federal prisoners in this state.