The act of accessing food is embedded within various systems of power. This dissertation problematizes our understanding of food access for vulnerable populations by making explicit ways that social constructions, including power, affect food access for vulnerable populations. This is accomplished across three manuscripts. The first manuscript presents textual analysis of Federal communication of the Supplemental Nutrition Assistance Program (SNAP) to ascertain underlying political ideologies regarding the purpose and structure of the program. The second manuscript presents the statistical development of a new measurement of food vulnerability that can be readily calculated at sub-County geographic levels that is situated in various indicators of food need. The third manuscript considers the race and ethnic demographic distribution of Oregon in development of new metrics that bring racial equity to food access measurement.