In McKillen v. Wallace (In re Irish Bank Resolution Corp. Ltd.), 2019 WL 4740249 (D. Del. Sept. 27, 2019), the U.S. District Court for the District of Delaware had an opportunity to consider, as an apparent matter of first impression, whether the U.S. common law "Barton Doctrine" applies extraterritorially. One of the issues considered by the district court on appeal was whether parties attempting to sue a foreign representative in a chapter 15 case must first obtain permission to sue from the foreign court that appointed the foreign representative.