William R. Day,
United States v. Doremus — Opinion of the Court
“ That Congress might levy an excise tax upon such dealers, and others who are named in section 1 of the act, cannot be successfully disputed. The provisions of section 2, to which we have referred, aim to confine sales to registered dealers and to those dispensing the drugs as physicians, and to those who come to dealers with legitimate prescriptions of physicians. Congress, with full power over the subject, short of arbitrary and unreasonable action which is not to be assumed, inserted these provisions in an act specifically providing for the raising of revenue. ”
