Yesterday, July 26, 2010, was the 20th anniversary of the Americans with Disabilities Act.
The ADA guarantees equal opportunity for individuals with disabilities in public accommodations, employment, transportation, and more. You can find out more about the ADA by visiting the the FAQ at USA.gov for links to regulations and guides. It even has a toll-free number so you can ask questions about ADA requirements.
USA.gov - Americans with Disabilities Act