The Architectural Barriers Act (ABA) is the first federal law to address access to the built environment. Passed by Congress in 1968, it ensures access to many federally funded facilities to this day. The ABA greatly informed the Americans with Disabilities Act (ADA) of 1990 and its requirements for access to facilities in the private and state and local government sectors. This session will compare the ABA and ADA and review differences between the accessibility standards issued under these laws. The presenter will explain how the ABA and ADA Accessibility Standards differ in application, scope, specific provisions, and enforcement. The relationship of these laws to other federal mandates that address facility access, such as the Rehabilitation Act and the Fair Housing Act, will also be covered.