or loan guarantees under this section to determine the proper allocation of loan funds that are loaned or guaranteed. (g) Definition of nonavailable item In this section, the term nonavailable item means any of the following: (1) An article, material, or supply— (A) that has been determined by a Federal agency, pursuant to chapter 83 of title 41, United States Code (popularly referred to as the Buy American Act), to not be mined, produced, or manufactured in the United States in sufficient and reasonably available commercial quantities of a satisfactory quality