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President Trump posted a series of early morning tweets on Thursday that put the disaster spotlight back on Puerto Rico.
In one tweet he reminded everyone that Puerto Rico's "electric and all infrastructure was disaster before hurricanes." In the next one he blamed Puerto Rico for its looming financial crisis and "a total lack of accountability." And finally he appeared to threaten to remove federal aid workers from the territory after Hurricane Maria.
Puerto Rico Gov. Ricardo Rossello responded by tweeting that Puerto Ricans "are requesting the support that any of our fellow citizens would receive across our Nation."
Hurricane Maria hit Puerto Rico more than three weeks ago, and residents of the territory have been frustrated with the federal government's response. Mainland politicians have also been urging the president to do more to help, such as New York Rep. Nydia Velazquez, who represents a large Puerto Rican constituency. She told NPR last month that the government's response has not been proportional to the extent of the disaster.
House Speaker Paul Ryan plans to visit Puerto Rico on Friday. The House on Thursday passed a $36.5 billion disaster aid package that includes money for communities affected by wildfires and hurricanes. It provides $1.27 billion for disaster food assistance for Puerto Rico.
What it means to be a U.S. territory
So what exactly does it mean to be a territory, and what responsibilities does the federal government have to the people of Puerto Rico?
Puerto Rico is one of five inhabited U.S. territories, along with American Samoa, Guam, the Northern Mariana Islands and the U.S. Virgin Islands. People of these territories (except some in American Samoa) are U.S. citizens, pay taxes and can freely travel within the U.S.
Much like states in the U.S., the territories also have their own governments and elect their own governors.
Unlike states, the territories do not have a vote in Congress. They each send a delegate to the House who possesses all powers of a representative besides voting rights, like the ability to debate legislation or sit on committees.
The territories also send delegates to political conventions, such as those to nominate presidential candidates. However, the territories have no electoral votes in the presidential election.
Despite their inability to vote on federal issues, Puerto Ricans have been U.S. citizens for more than 100 years and the government has the same responsibilities toward them as they do to other U.S. citizens.
How Puerto Rico became a U.S. territory
Puerto Rico was a Spanish colony until 1898, when the U.S. gained control of it, along with Guam and the Philippines, as part of the terms ending the Spanish-American War. Shortly thereafter, Congress passed a bill declaring Puerto Rico an "unorganized territory." This designation meant that Puerto Ricans were not yet U.S. citizens, but did provide them with a seat in the U.S. House.
An ambiguous Supreme Court ruling a year later defined Puerto Rico as an unincorporated territory. Its residents received some constitutional protections, but they were not considered part of the United States and did not receive full constitutional rights.
In 1917, the Jones Act granted Puerto Ricans U.S. citizenship, restructured the territory's government and created a bill of rights. It also made it easier for the U.S. to recruit Puerto Ricans to serve in World War I. The 1920 Jones Act restricted shipping to Puerto Rico and was temporarily waived after Hurricane Maria.
Despite these changes, the political status of Puerto Rico remained in limbo until the mid-20th century. In 1948, Puerto Rico elected its own governor for the first time under U.S. control. Four years later, the U.S. approved the Constitution of Puerto Rico, establishing it as a commonwealth of the United States. This meant Puerto Rico remained a U.S. territory, but created a "more highly developed relationship" with the federal government.
Since then, Puerto Rico has held referendums for statehood five times, most recently this year. While Puerto Ricans have rejected statehood in the past, they voted overwhelmingly in favor of it in June. That referendum, however, was non-binding and has no bearing on whether the territory will become a state. That decision is left up to Congress.
Tim Webber is an intern on NPR's National Desk.