Greystar, the nation's largest apartment landlord, is facing civil rights complaints from housing advocates for systematically rejecting tenants with federal rent vouchers (Section 8), with over 100 documented instances across multiple states including 53 in California alone. Section 8 discrimination is a federal fair housing violation — landlords cannot refuse tenants based on voucher status. This matters because it affects hundreds of thousands of lower-income families trying to access housing in a tight market where corporate landlords control an increasingly large share of available units. The enforcement action involves multiple state attorneys general and housing watchdog groups, suggesting coordinated legal pressure rather than isolated incidents.