Question juridique clé
Whether the enforcement authority correctly refused to enforce the return order because the U.S. entry and stay guarantees required by the prior Federal Supreme Court judgment were not fully obtained.
Solution extraite
At the time of the challenged enforcement decision, the guarantees for both entry and continued stay had not yet been fully established; the enforcement authority therefore acted lawfully.
Motifs extraits
The American documents ensured practical entry coordination, but they did not provide the required guarantee that the mother could remain in the U.S. until the custody proceedings were finally concluded.