The amici curiae brief submitted along with the supreme court claim pointed to a number of investigations carried out by parliamentary inquiries, courts and other institutions in Europe into CIA flights and secret detention centers.
The brief highlights the fact that it is possible to open investigations and proceedings even despite objections that state secrecy would be affected. A range of decisions by domestic European courts show that while the scope of investigations might be affected by national security considerations, proceedings may still be instigated and indeed completed in such cases. State secrecy concerns might place legal limitations on certain aspects of a case, but such limitations would not apply to the case as a whole.
The amici curiae brief aimed to encourage the US Supreme Court to consider in its decision the broader international context of the CIA flights and detention centers. As the author and driving force of the extraordinary rendition program, the US must now finally provide victims of these grave crimes with legal remedies and adequate compensation.