310 ILCS 10/8.21

In determining the income of tenants for the purpose of determining rent, the Housing Authority shall comply with all federal housing statutes and regulations of the U.S. Department of Housing and Urban Development.

Exemptions to federal, State, or local requirements may be granted to a Housing Authority in the form of Waivers, Exclusions, Public Notices, Executive Orders, or Moving to Work Agreements approved by the U.S. Department of Housing and Urban Development.