Louis Brandeis, Ng Fung Ho v. White — Opinion of the Court
“ Jurisdiction in the executive to order deportation exists only if the person arrested is an alien. The claim of citizenship is thus a denial of an essential jurisdictional fact. The situation bears some resemblance to that which arises where one against whom proceedings are being taken under the military law denies that he is in the military service. It is well settled that in such a case a writ of habeas corpus will issue to determine the status. ”
