US Department of Justice
U.s. Department of Justice: Webb v. Clyde L. Choate Mental Health Center [Pdf]
Although specifically a case in which the plaintiff is seeking federal support under the ADA against Illinois, there is an excellent discussion of state v. federal powers in the section labeled "Summary of Argument." The connection to...
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Us Department of Justice: Americans With Disabilities Act
The official homepage for the Americans with Disabilities Act provides information on standards for accessible design, business connections, public transportation, housing, labor, and stories on how communities have improved civic access.