Amends the Counties Code and Illinois Municipal Code. Provides that a county or municipality may not adopt, enforce, or implement an ordinance, resolution, policy, program, or other regulation affecting a tenancy that (1) imposes or threatens to impose a penalty against a resident, property owner, tenant, landlord, or other person solely as a consequence of contact with a law enforcement agency, (2) requires a property owner or landlord to do, or imposes a penalty on a property owner or landlord for the failure to do, specified things, (3) defines as a nuisance, any contact by a tenant with a law enforcement agency, any request by a tenant, landlord, resident or property owner for emergency assistance, (4) requires a tenant to obtain a certificate of occupancy as a condition of tenancy, or (5) establishes, maintains, or promotes a registry of tenants for the purposes of discouraging a landlord from renting to a tenant on the registry or excluding a tenant on the registry from rental housing within the county or municipality. Defines "penalty". Limits the concurrent exercise of home rule powers. Effective immediately.