The case of Horgan v. Simmons involves a dispute over the termination of Kenneth Horgan, a sales manager at Morgan, a linen and uniform rental services company. Horgan was terminated after it was discovered that he had been HIV-positive for 10 years, which he had not disclosed to anyone in the company. The court held that Horgan's termination was discriminatory under the Americans with Disabilities Act (ADA) because he was 'regarded as having such an impairment' by the defendant, even though his HIV status did not substantially limit any major life activities.