Fed. R. Civ. P. 24

(a) I NTERVENTION OF RIGHT. On timely motion, the court must

permit anyone to intervene who:

(1) is given an unconditional right to intervene by a federal

statute; or

(2) claims an interest relating to the property or transaction

that is the subject of the action, and is so situated that disposing 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.

(b) PERMISSIVE INTERVENTION.

(1) In General. On timely motion, the court may permit anyone to intervene who:

(A) is given a conditional right to intervene by a federal

statute; or

(B) has a claim or defense that shares with the main action a common question of law or fact.

(2) By a Government Officer or Agency. On timely motion, the

court may permit a federal or state governmental officer or

agency to intervene if a party’s claim or defense is based on:

(A) a statute or executive order administered by the officer or agency; or

(B) any regulation, order, requirement, or agreement issued or made under the statute or executive order.

(3) Delay or Prejudice. In exercising its discretion, the court

must consider whether the intervention will unduly delay or

prejudice the adjudication of the original parties’ rights.

37 Rule 26 FEDERAL RULES OF CIVIL PROCEDURE

(c) NOTICE AND PLEADING REQUIRED. A motion to intervene must

be served on the parties as provided in Rule 5. The motion must

state the grounds for intervention and be accompanied by a pleading that sets out the claim or defense for which intervention is

sought.

(As amended Dec. 27, 1946, eff. Mar. 19, 1948; Dec. 29, 1948, eff. Oct.

20, 1949; Jan. 21, 1963, eff. July 1, 1963; Feb. 28, 1966, eff. July 1, 1966;

Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 30, 1991, eff. Dec. 1, 1991; Apr. 12,

2006, eff. Dec. 1, 2006; Apr. 30, 2007, eff. Dec. 1, 2007.)