Respondents, Nigerian children (and their guardians), have properly alleged that Petitioner Pfizer Inc. ("Pfizer") conducted medical experiments on them without informed consent in 1996, and that this illegal activity was undertaken in concert with the Nigerian government…Respondents have brought claims in United States courts, asserting those courts have jurisdiction pursuant to the Alien Tort Statute…Pfizer’s Petition should be denied. The Second Circuit’s decision breaks no new ground, but, rather, represents a faithful application of Sosa v. Alvarez- Machain…to a unique and limited set of facts.