Arizona's Support Our Law Enforcement and Safe Neighborhoods Act, signed into law in April 2010, is already adversely affecting public health in the state. Our findings from a study on childhood obesity in Flagstaff suggest that the law changed health-seeking behaviors of residents of a predominantly Latino neighborhood by increasing fear, limiting residents' mobility, and diminishing trust of officials. These changes could exacerbate barriers to healthy living, limit access to care, and affect the overall safety of the neighborhood. Documentation of the on-the-ground impact of Arizona's law and similar state-level immigration policies is urgently needed. To inform effective policymaking, such research must be community engaged and include safety measures beyond the usual protocols.

Scholars and clinicians are increasingly recognizing the complexity of social contexts of health and the need for multifunctioning approaches to health care problems including community- and policy-level strategies. Barriers to change in health care policy can sometimes be attributed to the actions of advocacy coalitions who operate from a limited view of "policy change." Advocates have a tendency to pressure stakeholders to mandate laws as a final resolution of a movement, often leading to failure or, worse, stigmatizing of issues. A more inclusive focus on health policy change as an ongoing process increases the efficacy of advocacy and outcomes measurement. This article presents a tool for policy action that coalition members developed through the implementation of a 3-year grant to improve the safety net for preventing childhood obesity. Scholars and policy makers developed the Policy Coalition Evaluation Tool with the intent to create a model to guide and measure efforts and outcomes of a local community-based policy coalition. The authors suggest using community-based participatory research approaches for developing a coalition-specific Policy Coalition Evaluation Tool to increase the effectiveness of advocacy groups and the documentation of coalition activities over time.