The phase I interim report, is the second of three reports. The first report, the Evaluation of White Potatoes in the Cash Value Voucher: Letter Report, recommended allowing white potatoes for purchase with the cash value voucher. This second report presents the evidence, analyses, and framework that will be applied to develop the final report (phase II), which will include recommendations for potential modifications to the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) food packages.

The U.S. Department of Agriculture (USDA) provides nutrition assistance to Tribal communities through the Food Distribution Program on Indian Reservations (FDPIR). The last nationally representative study of FDPIR was based on 1989 data. Since that time, there have been many changes in FDPIR affecting eligibility, warehouse operations and distribution, customer service, and improvements in the types and variety of products offered in the food package. This report provides an update of FDPIR participant characteristics and program operations, based on a nationally representative sample of participants and sites.