Armed Forces under the command or operational control of a foreign national, unless the President’s military advisors have submitted to the President a recommendation that such involvement is in the national interest of the United States and the President has submitted to Congress such a recommendation: Provided further , That notwithstanding any other provision of law, funds appropriated or otherwise made available under this heading in this Act or prior Acts making appropriations for the Department of State, foreign operations, and related programs may be made available for United States assessed contributions up to the amount specified in the Annex accompanying United Nations General Assembly document A/73/350/Add.1. International commissions For necessary expenses, not otherwise provided for, to meet obligations of the United States arising under treaties, or specific Acts of Congress, as follows: International boundary and water commission, united states and Mexico For necessary expenses for the United States Section of the International Boundary and Water Commission, United States and Mexico, and to comply with laws applicable to the United States Section, including not to exceed $6,000 for representation expenses