delivered the opinion of the Court.
A United States District Court has jurisdiction under 28 U. S. C. § 2241 to grant a writ of habeas corpus “to a prisoner ... in custody in violation of the Constitution ... of the United States.” The question in this case is whether a state prisoner who has been placed on parole is “in custody” within the meaning of this section so that a Federal District Court has jurisdiction to hear and determine his charge that his state sentence was imposed in violation of the United States Constitution. 1
The habeas corpus jurisdictional statute implements the constitutional command that the writ of habeas corpus be made available. 2 While limiting its availability to those “in custody,” the statute does not attempt to mark the boundaries of “custody” nor in any way other than by use of that word attempt to limit the situations in which the writ can be used. To determine whether habeas corpus could be used to test the legality of a given restraint on liberty, this Court has generally looked to common-law usages and the history of habeas corpus both in England and in this country. 3
In England, as in the United States, the chief use of habeas corpus has been to seek the release of persons held in actual, physical custody in prison or jail. Yet English courts have long recognized the writ as a proper remedy even though the restraint is something less than close physical confinement. For example, the King’s Bench as early as 1722 held that habeas corpus was appropriate to question whether a woman alleged to be the applicant’s wife was being constrained by her guardians to stay away
Similarly, in the United States the use of habeas corpus has not been restricted to situations in which the applicant is in actual, physical custody. This Court itself has repeatedly held that habeas corpus is available to an alien seeking entry into the United States,
9
although in those cases each alien was free to go anywhere else in the world.
Respondent strongly urges upon us that however numerous the situations in which habeas corpus will lie prior decisions of this Court conclusively determine that
The Virginia statute provides that a paroled prisoner shall be released “into the custody of the Parole Board,”
16
and the parole order itself places petitioner “under the
Respondent also argues that the District Court had no jurisdiction because the petitioner had left the territorial confines of the district. But this case is not like
Ahrens
v.
Clark,
The case is reversed and remanded to the Court of Appeals with directions to grant petitioner’s motion to add the members of the Parole Board as respondents and proceed to a decision on the merits of petitioner’s case.
Reversed.
Notes
Parole in this case was granted while petitioner’s appeal was pending in the Court of Appeals.
“The Privilege of the Writ of Habeas Corpus shall not be suspended, unless when in Cases of Rebellion or Invasion the public Safety may require it.” U. S. Const., Art. I, § 9.
See, e.
g., McNally
v.
Hill,
Rex v. Clarkson, 1 Str. 444, 93 Eng. Rep. 625 (K. B. 1722).
Id., at 445, 93 Eng. Rep., at 625.
Rex v. Delaval, 3 Burr. 1434, 97 Eng. Rep. 913 (K. B. 1763).
Id., at 1437, 97 Eng. Rep., at 914.
Earl of Westmeath v. Countess of Westmeath, as set out in a reporter’s footnote in Lyons v. Blenkin, 1 Jac. 245, 264, 37 Eng. Rep. 842, 848 (Ch. 1821); accord Ex parte M’Clellan, 1 Dowl. 81 (K. B. 1831).
E. g., Brownell
v.
Tom We Shung,
Shaughnessy v. United States ex rel. Mezei, supra note 9, at 213.
E. g., Ex parte Fabiani,
E. g., Boardman
v.
Boardman,
Ford v.
Ford,
Parker
v.
Ellis,
United States ex rel. Lynn
v.
Downer,
Va. Code Ann. § 53-264.
See
Anderson
v.
Corall,
Va. Code Ann. §§ 63-258, 53-259. In fact, all the Board has to find is that there was “a probable violation.”
Even the condition which requires petitioner not to violate any penal laws or ordinances, at first blush innocuous, is a significant restraint because it is the Parole Board members or the parole officer who will determine whether such a violation has occurred.
The conditions involved in this ease appear to be the common ones. See Giardini, The Parole Process, 12-16 (1959).
