SEC-541 -- DESIGNATION OF CERTIFICATE AND VOUCHER PROGRAMS. (a) Certificate Program.-Section 8(b) of the United States Housing Act of 1937 (42 U.S.C. 1437f(b)) is amended by striking "(b)(1)" and inserting "(b) Rental Certificates and Other Existing Housing Programs.-". (b) Voucher Program.-Section 8(o) of the United States Housing Act of 1937 (42 U.S.C 1437f(o)) is amended by inserting "Rental Vouchers.-" after "(o)".