Class actions have gone global. Foreign parties are no longer a rarity in U.S. class litigation, among other developments. In addition to being named as defendants, foreigners increasingly form a significant part of the group of absent class members. U.S. courts have thus begun to consider some novel issues, including whether due process requires foreigners to be treated as an opt-in rather than an opt-out class; whether a judgment or settlement in the suit is capable of being enforced or recognized as res judicata abroad and thus whether class certification is justified in the first place; and whether a foreign forum grants comparable access to justice in the form of group litigation and thus represents an adequate alternative forum for pu...