In addition to the tax imposed pursuant to section 12-296, if the tax imposed by the federal government on cigarettes manufactured in or imported into the United States ever falls below eight dollars per thousand, generally, on cigarettes weighing not more than three pounds per thousand or sixteen dollars and eighty cents per thousand, generally, on cigarettes weighing more than three pounds per thousand, a tax is imposed on all cigarettes held in the state by any person for sale equal to the difference between:
Conn. Gen. Stat. § 12-296a
(P.A. 85-600, S. 3, 4.)