The Five U.S. Territories. UU. —Puerto Rico, U.S. Virgin Islands UU. (USVI), American Samoa, CNMI and Guam—obtain loans through financial markets. Puerto Rico, in particular, has accumulated large amounts of debt and began defaulting on debt payments in 2015. In 2017, hurricanes Irma and Maria caused widespread damage and destruction in Puerto Rico and the U.S. Virgin Islands. This put additional financial pressure on their already restricted economies. In June 2016, Congress approved and signed the Puerto Rico Oversight, Management and Economic Stability Act (PROMESA). This law contains a provision for the GAO to review the public debt of each of the five territories every two years. The GAO issued the first report on public debt in the territories in October 2017, reporting on trends in public debt between fiscal years 2005 and 2015. In this report, for each territory of the United States. In the United States, the GAO updates (1) trends in public debt, its composition and driving factors; (2) trends in revenues and composition, and the general financial condition; and (3) what is known about the capacity to pay public debt. The GAO analyzed the single audit reports of the territories for fiscal years 2016 and 2017, as available; reviewed relevant documentation and analysis; and interviewed officials from territorial governments, federal agencies, credit rating agencies and experts in the field. Commenting on a draft of this report, the governments of Puerto Rico and Guam expressed concerns about some aspects of their debt analysis. The GAO maintains that its analysis is correct, as discussed in the report.