OPINION Cornelia A. Clark, J. , delivered the opinion of the court, in which Jeffrey S. Bivins, C.J., and Sharon G. Lee, Holly Kirby, and Roger A. Page, JJ., joined. In this appeal of a certified question of law, the defendant challenges the constitutionality of a statute that imposes a fee upon persons convicted of certain drug and alcohol offenses when forensic scientists employed by the Tennessee Bureau of Investigation ("TBI") have conducted chemical tests to determine blood...