HABEAS CORPUS

18 U.S. Code § 1385.Use of Army and Air Force as posse comitatus
Whoever, except in cases and under circumstances expressly authorized by the Constitution or Act of Congress, willfully uses any part of the Army or the Air Force as a posse comitatus or otherwise to execute the laws shall be fined under this title or imprisoned not more than two years, or both.
(Added Aug. 10, 1956, ch. 1041, § 18(a), 70A Stat. 626; amended Pub. L. 86–70, § 17(d), June 25, 1959, 73 Stat. 144; Pub. L. 103–322, title XXXIII, § 330016(1)(L), Sept. 13, 1994, 108 Stat. 2147.)
https://www.law.cornell.edu/uscode/text/18/1385
Habeas Corpus
Latin for “that you have the body.” In the US system, federal courts can use the writ of habeas corpus to determine if a state’s detention of a prisoner is valid. A writ of habeas corpus is used to bring a prisoner or other detainee (e.g. institutionalized mental patient) before the court to determine if the person’s imprisonment or detention is lawful. A habeas petition proceeds as a civil action against the State agent (usually a warden) who holds the defendant in custody. It can also be used to examine any extradition processes used, the amount of bail, and the jurisdiction of the court. See, e.g. Knowles v. Mirzayance 556 U.S._(2009), Felker v. Turpin 518 US 1051 (1996) and McCleskey v. Zant 499 US 467 (1991).
https://www.law.cornell.edu/wex/habeas_corpus
Chain of Custody
https://www.law.cornell.edu/cfr/text/49/1580.107
https://www.law.cornell.edu/cfr/text/10/26.159