Policy and procedure, drug testing, evidence, due process, disparate treatment.

Charlie Tan appeals a lower court's ruling in his suit against the U.S. Postal Service. Tan applied for employment with the postal service, but his application was canceled when postal officials discovered he had falsified information concerning the agency's pre-employment drug screen. Tan later argued that he had a learning disability and misunderstood the agency's forms. The agency sustained its decision to cancel his application. Tan filed suit, claiming the postal service violated federal prohibitions concerning discrimination.

A U.S. District Court dismissed Tan's case with prejudice. The court ruled there was sufficient evidence to conclude that Tan deliberately falsified information on the employment application. Tan now appeals.

Tan loses. The U.S. Court of Appeals for the Fourth Circuit affirmed the ruling of the lower jurisdiction.