Southern District Judge Laura Taylor Swain has been selected to preside over Puerto Rico’s bankruptcy-protection filing, which may lead to the largest municipal debt restructuring in U.S. history.

In a one-sentence order handed down May 5 by U.S. Supreme Court Chief Justice John Roberts Jr., Swain was tasked with overseeing Puerto Rico’s filing for a form of bankruptcy relief from its numerous creditors. Roberts did not explain why he selected Swain in his order.