(a) Except as otherwise provided in subsection (d) of this section, the law of the issuing state or foreign country governs:
(1) The nature, extent, amount, and duration of current payments under a registered support order;
(2) The computation and payment of arrearages and accrual of interest on the arrearages under the support order; and
(3) The existence and satisfaction of other obligations under the support order.
(b) In a proceeding for arrears under a registered support order, the statute of limitation of this State or of the issuing state or foreign country, whichever is longer, applies.
(c) A responding tribunal of this State shall apply the procedures and remedies of this State to enforce current support and collect arrears and interest due on a support order of another state or a foreign country registered in this State.
(d) After a tribunal of this State or another state determines which is the controlling order and issues an order consolidating arrears, if any, a tribunal of this State shall prospectively apply the law of the state or foreign country issuing the controlling order, including its law on interest on arrears, on current and future support, and on consolidated arrears.
Structure Delaware Code
Chapter 6. UNIFORM INTERSTATE FAMILY SUPPORT ACT
Subchapter VI. Registration, Enforcement, and Modification of Support Order
§ 6-601. Registration of order for enforcement.
§ 6-602. Procedure to register order for enforcement.
§ 6-603. Effect of registration for enforcement.
§ 6-605. Notice of registration of order.
§ 6-606. Procedure to contest validity or enforcement of registered support order.
§ 6-607. Contest of registration or enforcement.
§ 6-609. Procedure to register child-support order of another state for modification.
§ 6-610. Effect of registration for modification.
§ 6-611. Modification of child-support order of another state.
§ 6-612. Recognition of order modified in another state.
§ 6-614. Notice to issuing tribunal of modification.
§ 6-615. Jurisdiction to modify child-support order of foreign country.
§ 6-616. Procedure to register child-support order of foreign country for modification.