To the extent that non-United States Department of Agriculture (USDA) federal funds and private grants or donations are made available for this purpose, the State Department of Public Health shall, no later than July 1, 2008, begin expansion of the breast-feeding peer counseling program at local agency California Special Supplemental Food Program for Women, Infants, and Children (WIC) sites. Plans for the expansion of the program shall take into account local WIC agency program models that have demonstrated the greatest improvement in breast-feeding rates, including exclusive breast-feeding rates. Program expansion shall be contingent upon the availability of non-USDA federal funds and private grants or donations being made available for this purpose. Nothing in this section shall impact USDA federal funding for the WIC Supplemental Food Program or the breast-feeding peer counseling program at local agency WIC sites.