The politics of so-called "morality policies" including same-sex marriage, abortion, gambling, and drug control have captured the attention of the public and social scientists in recent years. Drawing on data from journalistic accounts, legislative transcripts, elite interviews, and document analysis, this study examines the extensiveness of morality talk in debates over marijuana decriminalization in the United States. The results indicate that critics deployed moral (decriminalization sends the wrong message to youth, decreases risk perception, and promotes "normalization"), mixed (decriminalization has negative effects for families, communities, and society), and non-moral (decriminalization negatively impacts individuals vis-a-vis physical, mental, and social health) arguments. The results both improve our understanding of the factors that will shape United States marijuana policy in the future and offer theoretical implications for our understanding of morality policy as a substantive category of public policy.