Most recently, however, pizza chain Domino's has been brought under suit for their website not being accessible for specialty ordering. The U.S. Supreme Court refused to review the case, instead upholding the decision of the 9th U.S. Circuit Court of Appeals who said the “alleged inaccessibility of Domino’s website and app impedes access to the goods and services of its physical pizza franchises—which are places of public accommodation.”
You probably won't have to check your site with all of the available evaluation tools out there, but it is a good idea to do so for the most common web browsers. Just as accessibility software makes it easier for people with disabilities to navigate the Internet, these tools make it easier for developers to ensure accessibility from the start. When you think you've mastered it, go back through the Section 508 compliance checklist to ensure you've met every goal.
This plugin has been very useful in creating a fully ADA compliant site. Not only is it cheaper than most plugins, it encourages you as you work on the site. Letting you know what needs changed, and how far you have left to go. There's been a few issues' I've noticed with the builder "Themify", in the scanning. But whatever the issue is, most of the time the plugin creator has been very helpful in resolving these issues. The creator of the plugin responds within about 3 hours or less whenever you email. Most the time it's less than 30 minutes depending on the issue. Very glad to have such great support for the plugin. I highly recommend any business that is looking for building a ADA Compliant site, to use this plugin as it has done a great job for websites I use, and it's got a great price tag! It's well worth the price, and the additional features it gives to show you the definition of what each error is, is very useful.

The ADA requires that title II entities (State and local governments) and title III entities (businesses and nonprofit organizations that serve the public) communicate effectively with people who have communication disabilities. The goal is to ensure that communication with people with these disabilities is equally effective as communication with people without disabilities.