10 U.S.C. § 2396 — Advances for payments for compliance with foreign laws, rent in foreign countries, tuition, public utility services, and pay and supplies of armed forces of friendly foreign countries

(a) An advance from a Defense Department appropriation may pay^* for (1) compliance with a foreign country’s laws and ministerial regulations; (2) foreign rent for periods set by local custom; (3) tuition; and (4) public utilities.
(b)(1) Under regulations of the Defense Secretary, or the Homeland Security Secretary for the Coast Guard when it is not operating as part of the Navy, a United States armed-force officer^* responsible for public money may advance money to a friendly country’s disbursing official or armed forces^* for (A) that country’s forces’ pay and allowances and (B) needed supplies^* and services. (2) This is allowed only if the President has an agreement with the country requiring (A) repayment to the United States; (B) reciprocal advances to United States armed forces; and (C) other provisions the President considers needed to carry out this subsection and protect United States interests.