delivered the opinion of the Court.
The question before us is whether Title II of the Americans with Disabilities Act of 1990 (ADA), 104 Stat. 337, 42 U. S. C. § 12131
et seq.,
which prohibits a “public entity” from discriminating against a “qualified individual with a disability” on account of that individual's disability, see § 12132, covers inmates in state prisons. Respondent Ronald Yeskey was such an inmate, sentenced in May 1994 to serve 18 to 36 months in a Pennsylvania correctional facility. The sentencing court recommended that he be placed in Pennsylvania’s Motivational Boot Camp for first-time offenders, the successful completion of which would have led to his release on parole in just six months. See Pa. Stat. Ann., Tit. 61, § 1121
et seq.
(Purdon Supp. 1998). Because of his medical history of hypertension, however, he was refused admission. He filed this suit against petitioners, the Commonwealth of Pennsylvania’s Department of Corrections and several department officials, alleging that his exclusion from the Boot Camp violated the ADA. The District Court dismissed for failure to state a claim, Fed. Rule Civ. Proc. 12(b)(6), holding the ADA inapplicable to inmates in state prisons; the Third Circuit reversed,
Petitioners argue that state prisoners are not covered by the ADA for the same reason we held in
Gregory
v.
Ashcroft,
Assuming, without deciding, that the plain-statement rule does govern application of the ADA to the administration of state prisons, we think the requirement of the rule is amply met: the statute’s language unmistakably includes State prisons and prisoners within its coverage. The situation here is not comparable to that in
Gregory.
There, although the ADEA plainly covered state employees, it contained an exception for “'appointee[s] on the policymaking level’” which made it impossible for us to “conclude that the statute plainly eover[ed] appointed state judges.”
*209 “Subject to the provisions of this subehapter, no qualified individual with a disability shall, by reason of such disability, be excluded from participation in or be denied the benefits of the services, programs, or activities of a public entity, or be subjected to discrimination by any such entity.” 42 U. S. C. § 12132.
*210
Petitioners contend that the phrase “benefits of the services, programs, or activities of a public entity,” § 12132, creates an ambiguity, because state prisons do not provide prisoners with “benefits” of “programs, services, or activities” as those terms are ordinarily understood. We disagree. Modern prisons provide inmates with many recreational “activities,” medical “services,” and educational and vocational “programs,” all of which at least theoretically “benefit” the prisoners (and any
of
which disabled prisoners could be “excluded from participation in”). See
Block
v.
Rutherford,
We also disagree with petitioners’ contention that the term “qualified individual with a disability” is ambiguous insofar as concerns its application to state prisoners. The statute defines the term to include anyone with a disability
“who, with or without reasonable modifications to rules, policies, or practices, the removal of architectural, communication, or transportation barriers, or the provision of auxiliary aids and services, meets the essential eligibility requirements for the receipt of services or the participation in programs or activities provided by a public entity.” 42 U. S. C. § 12131(2).
*211
Petitioners argue that the words “eligibility” and “participation” imply voluntariness on the part of an applicant who seeks a benefit from the State, and thus do not connote prisoners who are being held against their will. This is wrong on two counts: First, because the words do not connote vol-untariness. See,
e. g.,
Webster’s New International Dictionary 831 (2d ed. 1949) (“eligible”: “Fitted or qualified to be chosen or elected; legally or morally suitable; as, an
eligible
candidate”);
id,,
at 1782 (“participate”: “To have a share in common with others; to partake; share, as in a debate”). While “eligible” individuals “participate” voluntarily in many programs, services, and activities, there are others for which they are “eligible” in which “participation” is mandatory. A drug addict convicted of drug possession, for example, might, as part of his sentence, be required to “participate” in a drug treatment program for which only addicts are “eligible.” And secondly, even if the words did connote voluntariness, it would still not be true that all prison “services,” “programs,” and “activities” are excluded from the ADA because participation in them is not voluntary. The prison law library, for example, is a service (and the use of it an activity), which prisoners are free to take or leave. Cf.
Gabel
v.
Lynaugh,
Finally, petitioners point out that the statute’s statement of findings and purpose, 42 U. S. C. § 12101, does not mention prisons and prisoners. That is perhaps questionable, since the provision’s reference to discrimination “in such critical
*212
areas as . . . institutionalization,”' § 12101(a)(3), can be thought to include penal institutions. But assuming it to be true, and assuming further that it proves, as petitioners contend, that Congress did not “envisio[n] that the ADA would be applied to state prisoners,” Brief for Petitioners 13-14, in the context of an unambiguous statutory text that is irrelevant. As we have said before, the fact that a statute can be “‘applied in situations not expressly anticipated by Congress does not demonstrate ambiguity. It demonstrates breadth.’ ”
Sedima, S. P. R.
L. v.
Imrex Co.,
Our conclusion that the text of the ADA is not ambiguous causes us also to reject petitioners’ appeal to the doctrine of constitutional doubt, which requires that we interpret statutes to avoid “grave and doubtful constitutional questions,”
United States ex rel. Attorney General
v.
Delaware & Hudson Co.,
We do not address another issue presented by petitioners: whether application of the ADA to state prisons is a constitutional exercise of Congress’s power under either the Commerce Clause, compare
Printz
v.
United States,
* * *
Because the plain text of Title II of the ADA unambiguously extends to state prison inmates, the judgment of the Court of Appeals is affirmed.
It is so ordered.
