Puerto Rico has voted overwhelmingly to apply to Congress to become the 51st state in the union. However, only about 23 percent of eligible voters participated in the vote on Sunday. Puerto Rico Governor Ricardo Rossello said voters in the U.S. island territory sent a strong message to Congress. Puerto Rico has been struggling economically for some time and requested in early May to enter into a bankruptcy-like proceeding to restructure its massive debt load after talks with creditors failed. The restructuring of Puerto Rico's estimated $70 billion in outstanding debt would be the largest in the history of the U.S. municipal bond market. Currently, every Puerto Rican citizen also automatically receives U.S. citizenship at birth.