The United States shall be represented by not more than three Commissioners who shall serve as delegates of the United States on the Commission, and who may serve on the Council and Panels of the Commission as provided for in the Convention. Such Commissioners shall be appointed by and serve at the pleasure of the President. Not more than one such Commissioner shall be a salaried employee of any State or political subdivision thereof, or the Federal Government. Individuals serving as such Commissioners shall not be considered to be Federal employees while performing such service, except for purposes of injury compensation or tort claims liability as provided in chapter 81 of title 5 and chapter 171 of title 28. The Commissioners shall be entitled to select a Chairman and to adopt such rules of procedure as they find necessary.

The Secretary of State shall pay the necessary travel expenses of United States Commissioners, Alternate United States Commissioners, and authorized advisors in accordance with the Federal Travel Regulations and sections 5701, 5702, 5704 through 5708, and 5731 of title 5.

The Secretary may reimburse the Secretary of State for amounts expended by the Secretary of State under this subsection.