(a) A court of the District shall recognize and enforce a child-custody determination of a court of another state if the latter court exercised jurisdiction in substantial conformity with this chapter or the determination was made under factual circumstances meeting the jurisdictional standards of this chapter and the determination has not been modified in accordance with this chapter.
(b) A court of the District may utilize any remedy available under other law of the District to enforce a child-custody determination made by a court of another state. The remedies provided in this subchapter are cumulative and do not affect the availability of other remedies to enforce a child-custody determination.