As a technology that may involve new risks, large-scale infrastructure, and significant government involvement, carbon capture and storage (CCS) generates considerable controversy. Because energy policy in the U.S. is negotiated at the state level, it is important to evaluate perceived advantages and disadvantages of CCS deployment in the U.S. at that level. This paper presents an analysis of CCS perceptions in 4 U.S. states representing varied levels of CCS deployment, potential for generating energy associated with CCS, and regulatory frameworks. Using a set of categories adapted from Luhmann's theory of social function systems, we present a content analysis of semi-structured interviews with key stakeholders in these states. We conclude by discussing implications of the advantages and disadvantages they identify for political contexts beyond the U.S.