Coleman Jackson appeals the district court’s order granting in part and denying in part his motion for attorney’s fees and his supplemental application for attorney’s fees pursuant to 42 U.S.C. § 1988(b), and the Prison Litigation Reform Act of 1995 (PLRA), 42 U.S.C. § 1997e(d). Jackson contends that § 1997e(d) does not govern his motion for attorney’s fees and his supplemental application for attorney’s fees, because his 42 U.S.C. § 1983 action challenged the length of his confinement and not “prison conditions” within the meaning of § 1997e(a). Alternatively, he contends that § 1997e(d) violates his right to equal protection under the due process clause of the Fifth Amendment. 1 The State Board of Pardons and Paroles cross-appeals, contending that the court erroneously awarded Jackson fees-on-fees, or attorney’s fees incurred in the course of litigating his petition for attorney’s fees. These three arguments present issues of first impres *793 sion in this Circuit. For the reasons set forth below, we affirm.
BACKGROUND
On August 4, 1999, Jackson was convicted of aggravated assault and sentenced to twenty years of imprisonment with five years to serve in prison and fifteen years of probation. 2 As of August 25, 1996, the date Jackson committed the assault, a prisoner convicted of aggravated assault was required to serve a minimum of one-third of his prison term before becoming eligible for a parole hearing before the board. See O.C.G.A. § 42-9-45(f). On December 9, 1997, however, the board amended its policy to provide that a prisoner convicted on or after January 1, 1998 of certain crimes, including aggravated assault, must serve a minimum of ninety percent of his term before becoming eligible for a parole hearing. The board applied its ninety-percent policy retroactively — that is, the board applied the new policy to all convictions entered on or after January 1, 1998 even if the underlying criminal conduct occurred before January 1, 1998. Thus, under the new policy, the board postponed the date of Jackson’s initial parole eligibility hearing.
After his requests to reconsider his parole eligibility were denied twice by the board and once by Georgia’s Superior Courts Sentence Review Panel, Jackson filed a joint motion for a writ of habeas corpus pursuant to 28 U.S.C. § 2241 and a complaint for damages pursuant to § 1983. He alleged that by applying the new policy to his offense the board retroactively increased his punishment in violation of the Ex Post Facto Clause of the United States Constitution. The magistrate judge recommended that the district court dismiss his habeas corpus petition without prejudice for lack of exhaustion of administrative remedies, dismiss his claim for damages under § 1988, and permit his claim for equitable relief under § 1983 to proceed. Jackson subsequently filed objections to the report and recommendation and incorporated a motion for equitable judgment therein.
The district court adopted the magistrate judge’s report and recommendation and, after conducting an evidentiary hearing, granted Jackson’s motion for equitable judgment, permanently enjoined the board from enforcing the new policy against Jackson, and ordered the board to provide Jackson with an initial parole eligibility hearing within forty-five days of the order. As a result, the board held a hearing and subsequently notified the court that it granted Jackson parole. 3
Thereafter, pursuant to § 1988(b), Jackson filed the instant motion for attorney’s fees in the amount of $34,875 and costs in the amount of $335.21, for a total award of $35,210.21. The board objected to his motion and asserted that because Jackson filed a § 1983 claim “with respect to prison conditions,” 42 U.S.C. § 1997e(a), the motion for attorney’s fees and costs should be governed by § 1997e(d) of the PLRA. 4 Thereafter, Jackson filed a reply brief and a supplemental application for attorney’s fees incurred while litigating the underlying motion in the amount of $2375.
*794 The district court concluded that (1) § 1997e governed Jackson’s underlying § 1983 claim and thus his motion for attorney’s fees, because the underlying claim challenged “prison conditions” within the meaning of § 1997e(a); (2) § 1997e(d)’s fees restrictions do not violate the equal protection component of the Fifth Amendment; and (3) § 1997e(d) permits a prevailing plaintiff to recover fees-on-fees. Thus, pursuant to § 1988 and § 1997e(d), the court granted in part and denied in part Jackson’s motion for attorney’s fees and costs and his supplemental application for attorney’s fees. 5 Jackson appeals the court’s application of § 1997e(d) to his motion for attorney’s fees and his supplemental application for attorney’s fees, 6 and the board cross-appeals, challenging Jackson’s supplemental attorney’s fees award as impermissible fees-on-fees. See id. § 1997e(d)(1)(A) (prohibiting attorney’s fees that are not “directly and reasonably incurred in proving an actual violation of the plaintiffs rights”).
DISCUSSION
I. Applicability of § 1997e(d) 7
Under § 1988(b), a district court may, in its discretion, award reasonable attorney’s fees to a successful § 1983 plaintiff. See id. § 1988(b). 8 Accordingly, neither party disputes that, as a successful § 1983 plaintiff, Jackson may receive reasonable attorney’s fees under § 1988. See id. The parties disagree, however, on the applicability of § 1997e(d) to Jackson’s underlying § 1983 claim and thus his motion for attorney’s fees. See id. § 1997e(d)(1) (restricting attorney’s fees awards authorized under § 1988 “[i]n any action brought by a prisoner”). Jackson contends that § 1997e(d)' is not applicable to his motion for attorney’s fees, because his § 1983 action challenged the length of his confinement and not “prison conditions” within the meaning of § 1997e(a). The board alleges that because Jackson’s § 1983 action was “brought by a prisoner,” § 1997e(d) is applicable to his motion for attorney’s fees.
“We begin our construction of section 1997e[(d)] where courts should always begin the process of legislative interpretation, and where they often should end it as well, which is with the words of the statutory provision.”
9
Harris v. Garner,
*795 (1) In any action brought by a 'prisoner who is confined to any jail, prison, or other correctional facility, in which attorney’s fees are authorized under [42 U.S.C. §] 1988 ..., such fees shall not be awarded, except to the extent that—
(A) the fee was directly and reasonably incurred in proving an actual violation of the plaintiffs rights protected by a statute pursuant to which a fee may be awarded under section 1988 ... and
(B)(i) the amount of the fee is proportionately related to the court ordered relief for the violation; or
(ii) the fee was directly and reasonably incurred in enforcing the relief ordered for the violation.
42 U.S.C. § 1997e(d)(1)(A)-(B) (footnotes omitted) (emphasis added). Here, we must determine the meaning of the phrase “any action brought by a prisoner” to decide whether § 1997e(d) applies to Jackson’s underlying § 1983 action and thus his motion for attorney’s fees and his supplemental application for attorney’s fees.
“In the absence of a statutory definition of a term, we look to the common usage of words for their meaning.”
CBS Inc. v. PrimeTime Joint Venture,
Furthermore, Congress chose “an expansive modifier—the word ‘any’—instead of a restrictive one.”
CBS Inc.,
Additionally, we have held that the term “brought,” as used in subsections (a) and (e) of § 1997e, means filed.
See Harris,
Finally, we need not resort to common usage to determine the meaning of the term “prisoner” in § 1997e(d), because Congress defined that term as it is used within § 1997e as follows: “any person incarcerated or detained in any facility *796 who is accused of, convicted of, sentenced for, or adjudicated delinquent for, violations of criminal law.” 42 U.S.C. § 1997e(h). As Jackson was convicted of aggravated assault and sentenced to twenty years of imprisonment, he is a prisoner within the meaning of § 1997e(h).
Therefore, it is apparent that § 1997e(d)’s phrase “any action brought by a prisoner” means all lawsuits that are filed by a prisoner and is not restricted to lawsuits challenging “prison conditions” that are filed by a prisoner. Accordingly, § 1997e(d) applies to Jackson’s underlying § 1983 action and thus his motion for attorney’s fees and his supplemental application for attorney’s fees. 10
II. Equal Protection 11
Jackson contends that § 1997e(d) violates his right to equal protection under the Fifth Amendment by restricting the attorney’s fees awards of prisoners while permitting other litigants to recover full attorney’s fees awards.
12
Although we previously have not addressed the constitutionality of § 1997e(d), several of our sister circuits have addressed this issue and found § 1997e(d) in its entirety, or its various subsections, constitutional.
See Foulk v. Charrier,
Generally speaking, “legislation is presumed to be valid and will be sustained if the classification drawn by the statute is rationally related to a legitimate [governmental] interest.”
City of Cleburne v. Cleburne Living Ctr.,
Without question, “prisoners have a constitutional right of access to the courts.”
Bounds v. Smith,
As § 1997e(d) does not involve a suspect class nor infringe upon a fundamental right, we review its constitutionality under the rational basis test.
See Gary,
*798
Under this highly deferential standard, we conclude that § 1997e(d) survives rational basis review. Apparently, by enacting § 1997e(d), Congress intended to decrease “marginal or trivial lawsuits.”
1
4
Hadix,
Additionally, by decreasing frivolous claims, “Congress could also ... be seeking to protect the state and federal treasuries, from which the majority of prisoner civil rights awards are paid.”
Id.
In light of the “shotgun” approach many attorneys utilized before the fee cap, “Congress could have rationally concluded that [such] prisoner civil rights litigation leads to attorney fees which are often disproportionate to the harm or injury. Thus, by reducing the number of marginal, albeit meritorious claims, some government resources would be preserved.”
Walker,
As Jackson has failed “to negat[e] every conceivable basis which might support” § 1997e(d), we must conclude that § 1997e(d) survives rational basis review.
Rodriguez,
III. Fees-on-Fees 16
On cross-appeal, the board contends that the district court erred in awarding Jackson fees-on-fees, because the fees-on-fees were not “directly and reasonably incurred in proving an actual violation” of Jackson’s rights. 42 U.S.C. § 1997e(d)(1)(A). Although we have not addressed whether § 1997e(d)(1) permits a prevailing § 1983 plaintiff to recover fees-on-fees, the Third and Fifth Circuits have concluded that fees-on-fees are recoverable under § 1997e(d)(1).
See Volk v. Gonzalez,
*799
Section 1988(b) permits reasonable attorney’s fees “[i]n any action or proceeding to enforce a provision of section[ ] ... 1983,” 42 U.S.C. § 1988(b), and § 1997e(d)(1)(A) permits attorney’s fees for “proving an actual violation of the plaintiffs rights,”
id.
§ 1997e(d)(1)(A). It is well-settled that fees-on-fees are permitted under § 1988 even though Congress did not explicitly provide for fees-on-fees therein.
Hernandez,
Therefore, as § 1988(b)’s language permitting fees-on-fees does not differ significantly from § 1997e(d)(1)(A)’s language, we join our sister circuits in concluding that fees-on-fees are recoverable under § 1997e(d).
See id.; Hernandez,
CONCLUSION
Thus, we conclude that § 1997e(d) applies to Jackson’s underlying § 1983 action and thus his motion for attorney’s fees and his supplemental application for attorney’s fees. Furthermore, we find that § 1997e(d)’s attorney’s fees restrictions survive rational basis review. Finally, we conclude that fees-on-fees are recoverable under § 1997e(d)(1)(A). Accordingly, we AFFIRM.
. It is irrelevant that Congress did not specify its purpose in making the classification.
See Heller,
Notes
. Although "the Fifth Amendment contains no equal protection clause, it does forbid discrimination that is so unjustifiable as to be violative of due process.”
United States v. Perez-Hernandez,
. Jackson did not appeal his conviction and sentence.
. The board also announced its intent to review the parole eligibility of 2200 similarly situated prisoners throughout Georgia.
. The board raised the applicability of the PLRA to this litigation for the first time in its objection to Jackson's motion.
. Specifically, the court awarded Jackson attorney’s fees in the amount of $9194.82, and costs in the amount of $113.96, for a total award of $9308.78.
. Jackson does not appeal the district court’s award of costs.
. “We review
de novo
issues of statutory interpretation.”
United States v. Fischer,
. Section 1988(b) provides in relevant part that "[i]n any action or proceeding to enforce a provision of section[] ... 1983 ... of this title, the court, in its discretion, may allow the prevailing party ... a reasonable attorney's fee as part of the costs.” 42 U.S.C. § 1988(b).
. As we frequently have stated, "[w]hen the import of words Congress has used is clear ... we need not resort to legislative history, and we certainly should not do so to undermine the plain meaning of the statutory language.”
CBS Inc. v. PrimeTime 24 Joint Venture,
. The district court concluded that § 1997e(d) governed Jackson's underlying § 1983 action and his motion for attorney’s fees, because the underlying action challenged “prison conditions” within the meaning of § 1997e(a). Section 1997e(a) provides that “[n]o action shall be brought with respect to prison conditions under section 1983 of this title, or any other Federal law, by a prisoner confined in any jail, prison, or other correctional facility until such administrative remedies as are available are exhausted.” 42 U.S.C. § 1997e(a) (emphasis added).
Although Congress included the term "prison conditions” in three of § 1997e’s subsections,
see id.
§ 1997e(a), (c)(1), (f)(1), it did not include that term in the remaining subsections,
see id.
§ 1997e(d)(1), (e), (g), (h). Clearly, Congress knew how to specify "prison conditions” and purposefully chose where to do so and where not to do so.
See In re Griffith,
. "We review the constitutionality of a federal statute
de novo.” United States v. Jackson,
. Section 1997e(d) provides,
(2) Whenever a monetary judgment is awarded in an action described in paragraph (1), a portion of the judgment (not to exceed 25 percent) shall be applied to satisfy the amount of attorney's fees awarded against the defendant. If the award of attorney's fees is not greater than 150 percent of the judgment, the excess shall be paid by the defendant.
(3) No award of attorney's fees in an action described in paragraph (1) shall be based on an hourly rate greater than 150 percent of the hourly rate established under section 3006A of title 18 for payment of court-appointed counsel.
(4) Nothing in this subsection shall prohibit a prisoner from entering into an agreement to pay an attorney's fee in an amount greater than the amount authorized under this subsection, if the fee is paid by the individual rather than by the defendant pursuant to Section 1988.
42 U.S.C. § 1997e(d)(2)-(4).
. While none of the courts of appeals that have addressed the constitutionality of § 1997e(d) have found it unconstitutional, one district court found § 1997e(d) unconstitutional.
See Johnson v. Daley,
. Jackson also contends that § 1997e(d)'s application has a disparate impact on African American males, because they represent the majority of persons incarcerated in our prisons. As Jackson has not demonstrated any evidence of discriminatory intent, we find that this claim lacks merit.
See Parks v. City of Warner Robins,
. "We review an award of attorney’s fees by the district court only for an abuse of discretion.”
Johnson v. Breeden,
