At the request of the U.S. Department of Agriculture, an expert Institute of Medicine (IOM) committee is undertaking a comprehensive review of the food packages used in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) to bring the program into alignment with current dietary guidelines. In this letter report, the first of three reports to result from this review, the IOM committee evaluates the 2009 regulation that excluded white potatoes from purchase with the WIC cash value voucher (CVV) and considers whether white potatoes should henceforth be allowed as a WIC-eligible vegetable in the CVV.

The purpose of this study was to examine how to define “adequacy” of SNAP allotments objectively in the context of program goals to improve food security and access to a healthy diet, existing data sources that could inform an assessment of the adequacy of existing and potential alternative SNAP allotments, and new data requirements to strengthen the evidence-base and allow for further rigorous analyses.