Run (into the ground) by decades of Democrat misrule, the Commonwealth of Puerto Rico circles the drain towards default of over $70 billion in bonds.
With English and Spanish as equally popular, no federal income tax for those living there over a number of years, and the gorgeous weather, the island should be prosperous. Unfortunately, they suffer from a disease as mind deadening as the zombie disease of fiction -- Democrats, which, are unfortunately, fact.
Best bet is for Congress to assign a financial control board like they did for DC. The board would have all the power to hire and fire, restructure government and other public services, to negotiate with bond holders to restructure the bonds.