Relevant Case law setting guideline limits to ICE searches an seizures of undocumented aliens.
“United States Supreme CourtINS v. LOPEZ-MENDOZA, (1984)No. 83-491Argued: April 18, 1984 Decided: July 5, 1984Respondent Mexican citizens were ordered deported by an Immigration Judge. Respondent Lopez-Mendoza unsuccessfully objected to being summoned to the deportation hearing following his allegedly unlawful arrest by an Immigration and Naturalization Service (INS) agent, but he did not object to the receipt in evidence of his admission, after the arrest, of illegal entry into this country. Respondent Sandoval-Sanchez, who also admitted his illegal entry after being arrested by an INS agent, unsuccessfully objected to the evidence of his admission offered at the deportation proceeding, contending that it should have been suppressed as the fruit of an unlawful arrest. The Board of Immigration Appeals (BIA) affirmed the deportation orders. The Court of Appeals reversed respondent Sandoval-Sanchez' deportation order, holding that his detention by INS agents violated the Fourth Amendment, that his admission of illegal entry was the product of this detention, and that the exclusionary rule barred its use in a deportation proceeding. The court vacated respondent Lopez-Mendoza's deportation order and remanded his case to the BIA to determine whether the Fourth Amendment had been violated in the course of his arrest…..”