(a)
Intervention 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.
(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.