Mississippi Code
Part 3 - . Registration and Modification of Child-Support Order of Another State
§ 93-25-611. Modification of child-support order of another state

If Section 93-25-613 does not apply, upon complaint, a tribunal of this state may modify a child-support order issued in another state which is registered in this state,if,after notice and hearing, it finds that:
Neither the child, nor the obligee who is an individual, nor the obligor resides intheissuing state;
A complainant who is a nonresident of this state seeks modification; and
The defendant is subject to the personal jurisdiction of the tribunal of this state; or
Modification of a registered child-support order is subject to the same requirements, procedures and defenses that apply to the modification of an order issued by a tribunal of this state and the order may be enforcedandsatisfied in the same manner.
A tribunal of this state may not modify any aspect of a child-support order that may not be modified under the law of the issuing state, including the duration of the obligation of support. If two (2) or more tribunals have issued child-support orders for the same obligor and the same child, the order that controls and must be so recognized under Section 93-25-207 establishes the aspects of the support order which are nonmodifiable.
In a proceeding to modify a child-support order, the law of the state that is determined to have issued the initial controlling order governs the duration of the obligation of support. The obligor's fulfillment of the duty of support established by that order precludes imposition of a further obligation of support by a tribunal of this state.
On the issuance of an order by a tribunal of this state modifying a child-support order issued in another state, the tribunal of this state becomes the tribunal having continuing, exclusive jurisdiction.
Notwithstanding subsections (a) through (e) and Section 93-25-201(b), a tribunal of this state retains jurisdiction to modify an order issued by a tribunal of this state if:
One (1) party resides in another state; and
The other party resides outside the United States.

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