This bill would prohibit housing authorities from denying people access to federally assisted housing based on their legal use of marijuana under state law. Currently, federal housing rules treat marijuana use as criminal activity that can disqualify applicants, even in states where marijuana is legal. The legislation amends federal housing laws to clarify that marijuana use, possession, sale, distribution, and manufacture compliant with state law cannot be grounds for denying housing eligibility or evicting residents. The bill applies to all federal housing programs, including public housing and voucher programs. Within 90 days of enactment, the Department of Housing and Urban Development must issue regulations establishing smoke-free zones for marijuana in federally assisted housing comparable to existing tobacco smoking restrictions.