Includes bibliographical references. ; The relationship between federal and state law enforcement agencies, specifically in regards to illegal immigration enforcement, has become of increasing importance following 9/11. This study examines these relationships with regards to a specific focus on intelligence gathering and sharing and resource allocation. This study utilizes previous survey data on state law enforcement agencies throughout the United States, and their responses to specific questions about federal collaboration. It was hypothesized the states’ allocation of resources to, as well as level of involvement in, terrorism related intelligence gathering would increase their interaction with federal agencies, however the results of this study indicate that there are actually only weak relationships present. It was, however, found that there is a significant positive relationship present among the state agencies’ level of involvement in immigration investigations and the allocation of resources to terrorism related intelligence gathering and sharing.