The District of Columbia, Porto Rico, The Virgin Islands, Guam and several other small possessions are not one of the states of the United States, but their residents are US Citizens.
Guam
Puerto Rico is a developed country because it is part of the United States of America, a developed country. Puerto Rico is a Commonwealth and an unincorporated territory of the United States. The currency is USD and the citizens are United States citizens under the laws of the U.S A. While residing in Puerto Rico they cannot vote in U.S. presidential elections, however if they become residents of an US state, they can vote in all elections..
If you mean the Congress of the Unites States of America, then that congress has the power to determine how non US citizens can (if they want) become US citizens. It does not have power to determine the rules for citizenship for any other country.
If one is only an American Citizen, they are still considered Citizens of the United States regardless of where they live (though they may be legal "residents" of other countries their "citizenship" remains).If one has dual (or multiple) citizenships, they would be considered American Citizens for some purposes (IRS can claim taxes on foreign-sourced income, for example) but if they are resident in one of the countries of their other citizenship, they would not be able to claim assistance of the United States vis-a-vis the other country.For example, if Bob is a citizen of the United States by birth and naturalized in Country "X" and Bob lives in Country "X". Bob could not claim assistance from the United States for punishment for crimes committed in "X" or from mandatory military service in "X".
One responsibility that is only for US citizens is the right to vote in federal elections. Only US citizens are eligible to participate in the democratic process by voting for their representatives in the federal government. Non-citizens, including permanent residents, do not have this right.
"E pluribus unum" is Latin; it means "Out of Many One" and refers to the idea that the United States is made up of individual states and populated by individual citizens, but we come together as a single country. It is on most US Coins.Out of many, one.
Citizens can show their love for their country by participating in civic duties such as voting, respecting national symbols and institutions, volunteering for community service, and staying informed about current events and issues to contribute positively to their society.
Hawaii contains five counties but zero countries.Several Countries maintain Consular Offices in Hawaii to assist foreign residents and vacationers. Hawaii is one of the 50 US States and the United States is a country.
Tourism involves residents of one country traveling within that country (involving two or more provinces)
The legal process by which citizens of one country become citizens of another.
Citizens would be excited and proud about the increased power of their country - APEX