serves over five million people "Policy Basics: The Housing Choice Voucher Program" Section 8 Housing Choice Voucher Program Housing Choice Vouchers plurality housing vouchers Section 8 Housing Choice Voucher Program important Housing Choice Vouchers Section 8 Housing Choice Voucher Program Housing Choice Vouchers Section 8 Housing Choice Voucher Program Housing Choice Vouchers vouchers Section 8 Housing Choice Voucher Program five million households notes five million households extremely low income cbpp.org more than 2.2 million U.S. families