Русско-англо-русский юридический словарь

A writ of habeas corpus is a court order. It demands that a public official (such as a warden) deliver an imprisoned person to the court and show good cause for their detention. The writ allows a prisoner to challenge the legality of their confinement. (FindLaw)

A writ of habeas corpus orders the custodian of an individual in custody to produce the individual before the court to make an inquiry concerning his or her detention, to appear for prosecution (ad prosequendum) or to appear to testify (ad testificandum). (U.S. Marshals Service)

The term “judicial proceedings instituted by the United States” as used in this section refers to all proceedings, whether criminal or civil, including pretrial and grand jury proceedings (as well as proceedings upon a petition for a writ of habeas corpus initiated in the name of the United States by a relator) conducted in, or pursuant to the lawful authority and jurisdiction of a United States district court. (28 USC § 1827(j))