In the case of Germany v. U.S. (526 U.S. 111 (1999)), two German nationals (the LaGrand brothers)
were in an Arizona prison facing the death penalty. The German government went
to the International Court of Justice (ICJ), which made a provisional ruling
that the LaGrands were not to be executed until the ICJ could rule on whether
they had been denied their rights to contact the German Embassy, as required by
the Vienna Convention on Consular Rights.