Notwithstanding any other law, the Director may appoint certified interpreters in accordance with
section 604(a)(16)(B) of this title without regard to the provisions of chapter 51 and subchapter III of chapter 53 of title 5, relating to classification and General Schedule pay rates, but the compensation of any person appointed under this subsection shall not exceed the appropriate equivalent of the highest rate of pay payable for the highest grade established in the General Schedule,
section 5332 of title 5.