Iowa Code § 626A.2: Filing and status of foreign judgments.

1. A copy of a foreign judgment authenticated in accordance with an Act of Congress or the statutes of this state may be filed in the office of the clerk of the district court of a county of this state which would have venue if the original action was being commenced in this state. The clerk shall treat the foreign judgment in the same manner as a judgment of the district court of this state. A judgment so filed has the same effect and is subject to the same procedures, defenses and proceedings for reopening, vacating, or staying as a judgment of the district court of this state and may be enforced or satisfied in like manner.

2. A proceeding to enforce a child support order is governed by 28 U.S.C. §1738B.