Except for United States Government employees, members of the Committee shall each be compensated at a rate equal to the daily equivalent of the rate for GS–18 of the General Schedule under section
5332 of title
5, for each day such member is engaged in the actual performance of duties vested in the Committee. Each member shall be reimbursed for travel expenses, including per diem in lieu of subsistence, as authorized by section
5703 of title
5 for persons in Government service employed intermittently.