This report reviews developments in state laws and regulations governing invasive species in eleven states. It finds that invasive species laws and regulations are often fragmented and incomplete and have developed primarily on a species-by-species basis in response to crisis. As a result, they often fail to address potential future invaders or close off known invasion pathways. Fortunately, states have begun regulating invasion pathways and identifying species that may become invasive in the future due to climate change or other factors. States are increasingly creating interagency councils and management plans to coordinate these novel invasive species responses.