I don't know if we can apply it to any of our circumstances, but for those that have been found disabled, it does state that you can not be denied benefts by state or government agencies. I am sure others will know much more than I on the subject.

http://www.ada.gov/cguide.pdf

Page 1 of ADA manual

Americans with Disabilities Act (ADA)
The ADA prohibits discrimination on the basis of disability in
employment, State and local government, public accommodations,
commercial facilities, transportation, and telecommunications. It also
applies to the United States Congress.
To be protected by the ADA, one must have a disability or
have a relationship or association with an individual with a disability.
An individual with a disability is defined by the ADA as a person
who has a physical or mental impairment that substantially limits one
or more major life activities, a person who has a history or record
of such an impairment, or a person who is perceived by others as
having such an impairment. The ADA does not specifically name all
of the impairments that are covered.

ADA section 504 page 17 (PDF)

Section 504
Section 504 states that “no qualified individual with a disability in
the United States shall be excluded from, denied the benefits of, or
be subjected to discrimination under” any program or activity that
either receives Federal financial assistance or is conducted by any
Executive agency or the United States Postal Service.
Each Federal agency has its own set of section 504 regulations
that apply to its own programs. Agencies that provide Federal
financial assistance also have section 504 regulations covering entities
that receive Federal aid. Requirements common to these regulations
include reasonable accommodation for employees with disabilities;
program accessibility; effective communication with people who have
hearing or vision disabilities; and accessible new construction and
alterations. Each agency is responsible for enforcing its own
regulations. Section 504 may also be enforced through private
lawsuits. It is not necessary to file a complaint with a Federal
agency or to receive a “right-to-sue” letter before going to court.
For information on how to file 504 complaints with the
appropriate agency, contact:
U.S. Department of Justice
Civil Rights Division
950 Pennsylvania Avenue, N.W.
Disability Rights Section - NYAV
Washington, D.C. 20530
www.ada.gov
(800) 514-0301 (voice)
(800) 514-0383 (TTY)