8 CFR 287.3 : Aliens And Nationality (§ 1.1 To Parts 1338-1399) — (§ 1.1 To Parts 1338-1399) — Department Of Homeland Security (§ 1.1 To Parts 393-499) — Immigration Regulations (§ 100.1 To § 299.5) — Field Officers; Powers And Duties (§ 287.1 To § 287.12) — Disposition of cases of aliens arrested without warrant.