Charles Evans Hughes, Valentine v. United States — Opinion of the Court
“ The effect of the exception of citizens in the treaty with France of 1909-now under consideration-must be determined in the light of the principles which inhere in our constitutional system. The desirability-frequently asserted by the representatives of our government and demonstrated by their arguments and the discussions of juries-of providing for the extradition of nationals of the asylum state is not a substitute for constitutional authority. The surrender of its citizens by the government of the United States must find its sanction in our law. ”
