What about the ADA?
(Americans with Disabilities Act)

There are two specific section of the ADA, Title II & Title III, that apply to Web accessibility.

Title II in particular Section VI: Communications Pertains to the Government (State/Local)

Title III Technical Assistance Manual. (Section 1.2 Public Accommodation ) deals with public accommodation of people with disabilities.

Question: Does the internet qualify as a place of public accommodation?