A federal judge on Tuesday approved a plan to restructure Puerto Rico's bond debt, which had plunged the U.S. territory into the country's largest municipal bankruptcy in history. Judge Laura Taylor Swain ruled in favor of the Plan of Adjustment that was years in the making, through arduous negotiations between the island's Fiscal Oversight Board, debtors and the government. According to Board officials, the plan will reduce Puerto Rico's debt by 80 percent and save the island more than $50 billion in debt payments. Puerto Rico Gov. Pedro Pierluisi said the approval of the plan "represents a great step for...