Three Guatemalans, alleged participants in a horrendous massacre in Guatemala in December 1982, are wanted by US immigration authorities and one of them has recently been arrested. The story of the massacre is told here. Scott Horton (via whom) points to one of the issues raised by the arrest:
The major question for U.S. prosecutors is now whether those apprehended will simply be charged for immigration offenses - such as making false statements to obtain visas or... citizenship - or with the underlying crimes committed at Dos Erres. Viewed in one way, the massacre would be a domestic criminal law matter for the Guatemalan authorities. Viewed another way, however, the massacre involved torture, murder, and kidnapping in the context of a domestic insurgency, violations of the laws of war and crimes against humanity subject to the concept of universal jurisdiction. Although U.S. political figures today routinely object to the exercise of universal jurisdiction by foreign courts and prosecutors when Americans are involved, in fact no nation has a more robust tradition of use of the universal jurisdiction concept than the United States.
(Thanks: SC.)