HRS §576B-603
When a support order from another state becomes enforceable here
A support order from another state or country is registered when it is filed in Hawaii's family court. Once registered, it is enforced like a Hawaii order. Hawaii courts must enforce it but cannot change it, as long as the issuing court had authority.
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The statute, as written — Effect of registration for enforcement
(a) A support order or income withholding order issued in another state or a foreign support order is registered when the order is filed in the family court of this State. (b) A registered support order issued in another state or a foreign country is enforceable in the same manner and is subject to the same procedures as an order issued by a tribunal of this State. (c) Except as otherwise provided in this chapter, a tribunal of this State shall recognize and enforce, but may not modify, a registered support order if the issuing tribunal had jurisdiction.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.