Conn. Gen. Stat. § 46b-407: Foreign support agreement.

(a) Except as otherwise provided in subsections (c) and (d) of this section, a tribunal of this state shall recognize and enforce a foreign support agreement registered in this state.

(b) An application or direct request for recognition and enforcement of a foreign support agreement must be accompanied by (1) a complete text of the foreign support agreement; and (2) a record stating that the foreign support agreement is enforceable as an order of support in the issuing country.

(c) A tribunal of this state may vacate the registration of a foreign support agreement only if, acting on its own motion, the tribunal finds that recognition and enforcement would be manifestly incompatible with public policy.

(d) In a contest of a foreign support agreement, a tribunal of this state may refuse recognition and enforcement of the agreement if it finds (1) recognition and enforcement of the agreement is manifestly incompatible with public policy; (2) the agreement was obtained by fraud or falsification; (3) the agreement is incompatible with a support order involving the same parties and having the same purpose in this state, another state, or a foreign country if the support order is entitled to recognition and enforcement under sections 46b-301 to 46b-425, inclusive, in this state; or (4) the record submitted under subsection (b) of this section lacks authenticity or integrity.

(e) A proceeding for recognition and enforcement of a foreign support agreement must be suspended during the pendency of a challenge to or appeal of the agreement before a tribunal of another state or a foreign country.