Fed. respondent. Civ. plaintiff.. Rule 24(a)(2) allows anyone, upon timely application, to intervene in an action if:
The applicant claims an interest relating to the property or transaction which is the subject of the action and the applicant is so situated that the disposition of the action may as a practical matter impair or impede the applicant's ability to protect that interest, unless the applicant's interest is adequately represented by existing parties.