Quick search by citation:

22 U.S. Code § 3422 - Participation of United States personnel in the Multinational Force and Observers

(a) Participation by United States Armed Forces; maximum limit on the number of members
(1)
Subject to the limitations contained in this subchapter, the President is authorized to assign, under such terms and conditions as he may determine, members of the United States Armed Forces to participate in the Multinational Force and Observers.
(2) The Congress declares that the participation of the military personnel of other countries in the Multinational Force and Observers is essential to maintain the international character of the peacekeeping function in the Sinai. Accordingly—
(A)
before the President assigns or details members of the United States Armed Forces to the Multinational Force and Observers, he shall notify the Congress of the names of the other countries that have agreed to provide military personnel for the Multinational Force and Observers, the number of military personnel to be provided by each country, and the functions to be performed by such personnel; and
(B)
if a country withdraws from the Multinational Force and Observers with the result that the military personnel of less than four foreign countries remain, every possible effort must be made by the United States to find promptly a country to replace that country.
(3)
Members of the United States Armed Forces, and United States civilian personnel, who are assigned, detailed, or otherwise provided to the Multinational Force and Observers may perform only those functions or responsibilities which are specified for United Nations Forces and Observers in the Treaty of Peace and in accordance with the Protocol.
(4)
The number of members of the United States Armed Forces who are assigned or detailed by the United States Government to the Multinational Force and Observers may not exceed one thousand two hundred at any one time.
(b) Participation by civilian personnel

Subject to the limitations contained in this subchapter, the President is authorized to provide, under such terms and conditions as he may determine, United States civilian personnel to participate as observers in the Multinational Force and Observers.

(c) Status of United States personnel

The status of United States Government personnel assigned to the Multinational Force and Observers under subsection (a)(1) or (b) of this section shall be as provided in section 2389 of this title.