The surrender of Elizaphan Ntakirutimana, suspected of having committed genocide, to the Rwanda Tribunal has again been the object of litigation in the US. After his surrender had initially been denied, the Court of Appeals for the Fifth Circuit has certified his surrender. This decision raised certain questions. On the one hand, it is fortunate that Ntakirutimana will stand trial before the Rwanda Tribunal. However, the assistance of the US with respect to future surrender of war criminals indicted by the Tribunals for the former Yugoslavia and Rwanda is by no means certain yet. A concurring and dissenting opinion attached to the decision illustrate that US Judges are still not overly convinced of the constitutionality of the US method of implementing the obligations arising out of the creation of these ad hoc Tribunals.