The following sales are hereby exempted from the stamp excise tax levied pursuant to the provisions of Section 301 et seq. of this title:
1. All cigarettes sold to veterans hospitals and state operated domiciliary homes for veterans located in the State of Oklahoma, for distribution or sale to disabled ex-servicemen or disabled ex- servicewomen interned in, or inmates of, such hospitals, or residents of such homes;
2. All sales to the United States;
3. All sales to a federally recognized Indian tribe or nation which has entered into a compact with the State of Oklahoma pursuant to the provisions of subsection C of Section 1 of this act or to a licensee of such a tribe or nation, upon which the payment in lieu of taxes required by the compact has been paid; and 4. All sales to a federally recognized Indian tribe or nation or to a licensee of such a tribe or nation upon which the tax levied pursuant to the provisions of Section 4 of this act has been paid. Laws 1965, c. 195, § 2, emerg. eff. June 10, 1965; Laws 1992, c. 339, § 16, eff. Jan. 1, 1993.