Key legal question
Whether the appealable decision on child return under the Hague Convention could be challenged by constitutional complaint and whether novelties were admissible.
Extracted holding
The Court held that Hague child-return proceedings are not civil litigation under the OG; the only available remedy is constitutional complaint, and new facts were inadmissible.
Extracted reasoning
The Convention functions as administrative mutual legal assistance. In constitutional complaint proceedings based on treaty violations, novas are barred.