Justice William J. Brennan on Due Process for Immigrants

Whatever his status under the immigration laws, an alien is surely a ‘person’ in the ordinary sense of that term. Aliens, even aliens whose presence in this country is unlawful, have long been recognized as ‘persons’ guaranteed due process of law by the Fifth and Fourteenth Amendments.

U.S. Supreme Court Justice William J. Brennan, Plyler v. Doe (1982).