Americans with Disabilities Act of 1990
Make reasonable accommodations in rules and ways of doing things, to make sure that people with disabilities can buy and do things in public accommodations.  (For example, a clothing store might have a rule that only one person is allowed to be in a dressing room at one time.  Some people with disabilities need help getting dressed.  The store would have to change their rule to say that two people are allowed in a dressing room if one of them needs help getting dressed because of a disability.)