The Census Bureau says more than 51 million Americans have some kind of disability , with nearly two-thirds of them reporting severe impairments . ¶ Courts would have to provide a lift or a ramp to ensure that people in wheelchairs could get into the witness stand , which is usually elevated from floor level . ¶ Auditoriums would have to provide a lift or a ramp so wheelchair users could " participate fully and equally in graduation exercises and other events " at which members of the audience have direct access to the stage . ¶ Any sports stadium with a seating capacity of 25,000 or more would have to provide safety and emergency information by posting written messages on scoreboards and video monitors .