Mahlon Pitney, Lapina v. Williams — Opinion of the Court
“ That the following classes of aliens shall be excluded from admission into the United States: . . . prostitutes, or women or girls coming into the United States for the purpose of prostitution, or for any other immoral purpose; . . .Sec. 3. . . . any alien woman or girl who shall be found an inmate of a house of prostitution or practising prostitution, at any time within three years after she shall have entered the United States, shall be deemed to be unlawfully within the United States, and shall be deported as provided by sections twenty and twenty-one of this act. ”
