In response to increased prenatal drug use since the 2000s, states have adopted treatment-oriented laws giving pregnant and postpartum people priority access to public drug treatment programs as well as multiple punitive policy responses. No prior studies have systematically characterized these state statutes or examined implementation of state priority access laws in the context of co-existing punitive laws. We conducted legal mapping to examine state priority access laws and their overlap with state laws deeming prenatal drug use to be child maltreatment, mandating reporting of prenatal drug use to child protective services, or criminalizing prenatal drug use. We also conducted interviews with 51 state leaders with expertise on their states' prenatal drug use laws to understand how priority access laws were implemented. Thirty-three states and the District of Columbia have a priority access law, and more than 80% of these jurisdictions also have one of the punitive prenatal drug use laws described. Leaders reported major barriers to implementing state priority access laws, including the lack of drug treatment programs, stigma, and conflicts with punitive prenatal drug use laws. Our results suggest that state laws granting pregnant and postpartum people priority access to drug treatment programs are likely insufficient to significantly increase access to evidence-based drug treatment. Punitive state prenatal drug use laws may counteract priority access laws by impeding treatment seeking. Findings highlight the need to allocate additional resources to drug treatment for pregnant and postpartum people.