; and (ii) December 31 of every 5th year following 2024. . 302. Demonstration project to ensure Medicaid-enrolled children have access to integrated mental health and substance use disorder care services, including prevention and early intervention services (a) In general Not later than the date that is 180 days after the date of the enactment of this section, the Secretary shall conduct a 54-month demonstration project for the purpose described in subsection (b) under which the Secretary shall— (1) for the first 18-month period of such project, award planning grants described in subsection (c)