OPINION
Tоday we revisit our so-called “federal defendant” rule, which categorically prohibits private parties and state and local governments from intervening of right on the merits of claims brought under the National Environmental Policy Act of 1969 (“NEPA”), 42 U.S.C. § 4321
et seg.
Because the rule is at odds with the text of Federal Rule of Civil Procedurе 24(a)(2) and the standards we apply in all other intervention of right cases, we abandon it here. When construing motions to intervene of right under Rule 24(a)(2), courts need no longer apply a categorical prohibition on intervention on the merits, or liability phase, of NEPA actions. To determine whether a putative intervenor demonstrates the “significantly protectable” interest necessary for intervention of right in a NEPA action, the operative inquiry should be, as in all cases, whether “the interest is protectable under some law,” and whether “there is a relationship between the legally protected interest and the claims at issue.”
Sierra Club v. EPA,
I. BACKGROUND
This action arises out of the Forest Service’s adoption of a travel plan that designated 1,196 miles of roads and trails for use by motorized vehicles in the Minidoka Ranger District of Idaho’s Sawtooth National Forest. Two conservation groups, the Wilderness Society and Prairie Falcon Audubon, Inc., claim that the Forest Service violated NEPA by, among other things, failing to prepаre an Environmental Impact Statement and failing to consider reasonable alternatives to the travel plan that would protect certain ecologically sensitive watersheds and wildlife habitats within the District. Their complaint seeks declaratory and injunctive relief invalidating the travel plan, limiting motorized vehicles to previously authorized routes, and prohibiting off-road vehicles from traveling outside designated routes, pending compliance with NEPA and other environmental statutes.
The issue central to this appeal arose when three groups representing recreation interests, the Magic Valley Trail Machine Association, Idaho Recreation Council, and Blue Ribbon Coalition, Inc., moved to intervene to counter the conservation groups’ contention that the Forest Ser *1177 vice’s plan was too accommodating to users of motorized vehicles. The conservation groups opposed intervention, and the Forest Service took no position on the issue. Applying our Circuit’s “federal defendant” rule, the district court denied intervention of right. The district court also denied permissive intervention on the grounds that the recreation groups had not adequately participated in the administrative process and “would not add any further clarity or insight” to the litigation.
The recreation groups appealed, arguing that the district court erred in failing to consider limited intervention and abused its discretion in denying permissive intervention. They also urged us to consider modifying or eliminating the “federal defendant” rule. A three-judge panel of our court ordered the parties to brief whether the court should review the case en banc to consider abandoning the rule. The recreation groups again urged the court to do so. The conservation groups took no position on the propriety of the rule. We granted en banc review. We have jurisdiction pursuant to 28 U.S.C. § 1291.
See Forest Conservation Council v. U.S. Forest Serv.,
II. INTERVENTION OF RIGHT IN NEPA CASES
Federal Rule of Civil Procedure 24(a)(2) requires a court, upon timely motion, to permit intervention of right by anyone who “claims an interest relating to the property or transaction that is the subject of the action, and is so situated that dispоsing of the action may as a practical matter impair or impede the movant’s ability to protect its interest, unless existing parties adequately represent that interest.” When analyzing a motion to intervene of right under Rule 24(a)(2), we apply a four-part test:
(1) the motion must be timely; (2) the applicant must сlaim a “significantly protectable” interest relating to the property or transaction which is the subject of the action; (3) the applicant must be so situated that the disposition of the action may as a practical matter impair or impede its ability to protect that interest; and (4) the applicant’s interest must be inadequately represented by the parties to the action.
Sierra Club,
Our “federal defendant” rule categorically precludes private parties and state and local governments from intervening of right as defendants on the merits of NEPA actions.
See Churchill County v. Babbitt,
In subsequent cases, we interpreted
Portland Audubon
to hold that the federal government is the
only
proper defendant in a NEPA compliance action.
See, e.g., Churchill County,
III. DISCUSSION
In addition to the recreation groups, no fewer than thirty-seven amici— including conservation, recreation and commercial groups, state and local governments, Indian tribes, regional water authorities, and the federal government,
1
among others — argue that we should abandon our categorical prohibition on the ability of private parties and state and local gоvernments to intervene of right as defendants on the merits of NEPA cases. We agree. Such a bright-line rule is inconsistent with the text of Rule 24(a)(2), which requires only “an interest relating to the property or transaction that is the subject of the action.” Fed.R.Civ.P. 24(a)(2). In stating that “private parties do not have a ‘significant protectable interest’ in NEPA compliance actions,”
Kootenai Tribe,
The “federal defendant” rule’s limitation on intervention of right in NEPA actions also runs counter to the standards we apply in all other intervention of right cases. In evaluating whether Rule 24(a)(2)’s requirements are met, we normally follow “practical and equitable considerations” and construe the Rule “broadly in favоr of proposed intervenors.”
United States v. City of Los Angeles,
The “federal defendant” rule runs counter to all of the above standards. In applying a technical prohibition on intervention of right on the merits of all NEPA cases, it eschews practical and equitable considerations and ignores our traditionally liberal policy in favor of intervention. It also fails to recognize the very real possibility that private parties seeking to intervene in NEPA cases may, in certain сircumstances, demonstrate an interest “protectable under some law,” and a relationship between that interest and the claims at issue. Courts should be permitted to conduct this inquiry on a case-by-case basis, rather than automatically prohibiting intervention of right on the merits in all NEPA cases.
That the “federal defendant” rule is at odds with the normal standards we apply in all other intervention of right cases is further demonstrated by our consistent approval of intervention of right on the side of the federal defendant in cases asserting violations of environmental statutes other than NEPA.
See, e.g., Sierra Club,
Finally, our application of the “federal defendant” rule is out of step with all but one of our sister circuits that have addressed whether private parties may intervene of right on the merits of NEPA clаims.
See, e.g., WildEarth Guardians v. U.S. Forest Serv.,
We now abandon the “federal defendant” rule. When considering motions to intervene of right under Rule 24(a)(2), courts need no longer apply a categoriсal prohibition on intervention on the merits, or liability phase, of NEPA actions. To determine whether putative intervenors demonstrate the “significantly protectable” interest necessary for intervention of right in a NEPA case, the operative inquiry should be whether the “interest is protect-able under some law” and whether “there is a relationship between the legally protected interest and the claims at issue.”
Siem Club,
Because the district court applied the “federal defendant” rule to deny the recreation groups’ motion to intervene, we reverse and remand so that it may consider anew their motion, including the related *1181 request for permissive intervention, in light of our holding today.
REVERSED and REMANDED.
Notes
. Although it does not support the rule, thе federal government argues that this case does not properly present the question of whether private parties may intervene on the merits of NEPA claims because the recreation groups seek only to intervene in the remedial phase of the conservation groups’ suit against the Fоrest Service. We disagree. In their motion to intervene, the recreation groups requested intervention “with full rights as a party.” And in their proposed answer, the recreation groups denied the conservation groups’ contentions that the Forest Service violated NEPA by failing to, among other things, prepare an Environmental Impact Statement, consider reasonable alternatives to the travel plan, and take a "hard look” at the impacts caused by motorized vehicle use in the Minidoka District. The fact that the recreation groups also filed a proposed cross-claim alleging thаt the Forest Service violated NEPA in different respects does not erase the fact that they sought to intervene as defendants to counter the conservation groups' contentions on the merits. Because the district court applied the “federal defendant” rule in holding that they could not do so, the propriety of the rule is properly before us.
. This case also appears to have included NEPA claims, but the panel decision does not explicitly address intervention as to those claims.
See Sagebrush Rebellion, Inc. v. Hodel,
. The Second and Sixth Circuits have declined to expressly address whether private parties may intervene of right on the merits of NEPA cases.
See Friends of Tims Ford v. Tenn. Valley Auth.,
