Office of Tribal Affairs (OTAP) OTAP is an office within the SAMHSA, which serves as the primary point of contact for tribal governments, tribal organizations, federal departments and agencies, and other governments and agencies on behavioral health issues facing American Indians and Alaska Natives (AI/AN) in the United States. SAMHSA addresses mental health and substance use issues among American Indians and Alaska Natives through the National Tribal Behavioral Health Agenda and other initiatives. Learn more about SAMHSA’s Tribal Affairs. SAMHSA Data, Reports, and Issue Briefs 2018 National Survey on Drug Use and Health: American Indians and Alaska Natives (AI/ANs) This slide deck (available as a PPT and PDF) presents data specific to AI/ANs based on the graphics, tables, and figures from the 2018 National Survey on Drug Use and Health (NSDUH) Annual Report. Behavioral Health Barometer, Volume 5 This national report presents data from the 2017 National Survey on Drug Use and Health and the National Survey of Substance Abuse Treatment Services. Some measures include data presented by race/ethnicity and other demographic variables. State reports provide a snapshot of substance use and mental health in the United States.