22 U.S. Code § 263 - International Prison Commission
The United States shall continue as an adhering member of the International Prison Commission and participate in the work of said commission.
The Secretary of the Treasury be, and he is hereby, authorized annually to pay the pro rata share of the United States in the administration expenses of the International Prison Commission and the necessary expenses of a commissioner to represent the United States on said commission at its annual meetings, together with necessary clerical and other expenses, out of any money which shall be appropriated for such purposes from time to time by Congress.
Source(Feb. 28, 1913, ch. 86, 37 Stat. 692.)