President George H.W. Bush signs the Americans with Disabilities Act during a ceremony on the South Lawn of the White House in 1990. Joining the president are Evan Kemp (left), chairman of the Equal Opportunity Employment Commission; the Rev. Harold Wilke; Sandra Parrino, chairman of the National Council on Disability; and Justin Dart, chairman of the President's Council on Disabilities. Photo: Barry Thumma, Associated Press
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