(a) The chief law enforcement officer of every state and local law enforcement agency must establish and enforce a written policy addressing how the agency will respond to and investigate reports of sexual assault. The policy must substantially incorporate the main items from the board's model policy on responding to reports of sexual assault, but also may expand on the board's policy. As an alternative, the policy may be identical to the board's policy.
(b) Each chief law enforcement officer must certify to the board that the policy described in paragraph (a) is in place and being enforced and forward a copy of the policy to the board.