Either on their website (if they have one) or you can find out on your local website for Congress. Also, if you simply google them you could find information as well.
the government can make builds more accessible by installing new ways disabled people can enter/do things in a building.
the government can enact laws that prohibits businesses from discriminating disabled people.
the government can put up signs that has important informations for disabled people to read. (signs menus that people can point to if they are unable to speak)