California Code, Business and Professions Code - BPC § 1000-9

Notwithstanding any provision contained in any other section of this act, the board, upon receipt of the fee specified in Section 5,  1 shall issue a license to any person licensed to practice chiropractic under the laws of another state, provided said state then had the same general requirements as required in this state at the time said license was issued, and provided that such other state in like manner grants reciprocal registration to chiropractic practitioners of this state.

The applicant shall also provide a certificate from the other state stating that he was licensed by that state, that he has not been convicted of unprofessional conduct, and that there is no charge of unprofessional conduct pending against him.