He may be a good candidate to become a champion on this issue, and can help convince colleagues to work on it as well.
If you or your group can become known as a good source of information for this or other legislators – as the experts to call on when they want to know about disability issues – you may be in a good position to persuade legislators and policymakers to pay attention to those issues, and to draft laws to improve the situation of people with disabilities.
An ideal here is to establish a citizen advisory group that includes people with disabilities and others with knowledge of the field.
If that group has a seat at the table when design standards, laws, and other similar issues are being discussed, it is likely that the needs of people with disabilities will be raised and addressed.
That person is usually the place to start with a complaint or a demand for enforcement. If it appears that there’s going to be some major difficulty, find a lawyer who has experience in cases involving disability rights, or a disability rights organization that has such lawyers and others on staff, and let them handle the negotiation.