29 CFR Part 1630, Regulations to Implement the Equal Employment Provisions of the ADA (Title I Regulations with amendments issued through May 2016)

(3) Where an individual is not challenging a covered entity's failure to make reasonable accommodations and does not require a reasonable accommodation, it is generally unnecessary to proceed under the “actual disability” or “record of” prongs, which require a showing of an impairment that substantially limits a major life activity or a record of such an impairment. In these cases, the evaluation of coverage can be made solely under the “regarded as” prong of the definition of disability, which does not require a showing of an impairment that substantially limits a major life activity or a record of such an impairment. An individual may choose, however, to proceed under the “actual disability” and/or “record of” prong regardless of whether the individual is challenging a covered entity's failure to make reasonable accommodations or requires a reasonable accommodation.