United State of America is the most influential country in the world. It is the most popular country in the world, no one don’t know US. In world politic, US are so strong, in entertainment nothing can beat Hollywood movies, and there are so many interesting stories about US. People love to visit US, people dreaming to go there and lots of people want to live there. It is because the country is so big, developed, and promising better life for lots of people who live there. For foreign people there are regulations if you want to visit United State, to live there or even become US citizen. And all about it is under authority of U.S. Citizenship and Immigration Service (USCIS) or formerly INS (Immigration and Naturalization Service).
To visit United State, you need more than just passport you need U.S. Visa to enter the country, even for just recreational purpose. This is very important because United State of America is very concern with domestic security, especially after 9/11, they become so protective and filtering anybody who wants to enter the country. To get U.S Visa you can go to U.S. Embassy on your country, it may take days or weeks until you get the approval.
If you want to live and work in United State in permanent basis, you may apply for permanent residency and get United State permanent resident card or people commonly call it green card. They call it green card because during 1946-1964 the card is green color and although the color has change people still call it green card. To get this permanent residency, you must apply it on USCIS. This green card will give you more right to live and work in United State and the green card must carry anywhere you are because it is immigration status identification.
After being lawful permanent resident for more than 5 years, you have opportunity to apply U.S. citizenship. You need to fill citizenship application at USCIS and appear on the interview. It may take 5 months to 2 years until the approval of your citizenship. It is depends on how much and how busy the USCIS with citizenship application and how you con complete all requirements. Become U.S citizen you have right for federal election and to be elected, you will also get opportunity for federal government job. You will also have right to sponsor your family to live in United State