In 2003, the General Assembly enacted a law that provides that individuals who do not pay their taxes cannot renew their State professional licenses. See 2003
Laws of Maryland ch. 203 § 24.
Along comes Dr. Knoche, a dentist, who did not pay any state income tax between 1980 and 1989. In July 2004, the Dental Board denied Dr. Knoche's application to renew his dental licences.
In Knoche v. State, the Court of Special Appeals upheld the Constitutionality of the law and told Dr. Knoche that he was out of luck.