A social security card is used in the U.S. as way to prove your identity. Each social security card has a 9-digit social security number (SSN). This number is unique to each person and used for the purpose of tracking an individual in the U.S. Social Security Administration. All people who work in the U.S. must have a SSN. SSNs are mostly used for tax purposes.
The "two-year rule" is the common term used for a section of U.S. immigration law which requires many exchange visitors to return to their home countries and be physically present there for at least two years after the conclusion of their exchange visit before they can return to the U.S. under certain types of visas, specifically H, K, L and immigrant visas. It is important to note that only a preliminary finding of whether the two-year rule applies to you is made on your DS-2019 when your J-1 visa is issued. The final decision will be made only if you later choose to apply for an H, L, K or immigrant visa.
H-3 trainees: The length of the proposed training program, plus up to ten days before and after the start and end dates. If the initial program was designed to last for a shorter period than this but has been continued, the employer may request an extension from USCIS, up to the maximum authorized stay, which is two years (or 18 months for a special education exchange program).
Yes. In general, you may apply to change your nonimmigrant visa status if you were lawfully admitted to the United States with a nonimmigrant visa, if your nonimmigrant status remains valid, if you have not violated the conditions of your status, and you have not committed any actions that would make you ineligible. For more details, please visit the USCIS website.

Visas can also be single-entry, which means the visa is cancelled as soon as the holder leaves the country; double-entry, or multiple-entry, which permits double or multiple entries into the country with the same visa. Countries may also issue re-entry permits that allow temporarily leaving the country without invalidating the visa. Even a business visa will normally not allow the holder to work in the host country without an additional work permit.
Palau expresses its deepest thanks for your support through the PPEF. The PPEF will help provide the financial and moral support necessary to continue our mission of protecting Palau’s natural environment for future generations. With your help, we will continue to hold true to our reputation as one of the most beautiful places and best diving destinations in the world.
Some countries, such as Canada and the United States, may require the visitor to include a letter of invitation with their travel visa application. A letter of invitation is a formal letter from the person you intend to visit stating that they are inviting you to visit them in that country. Invitation letters help travel authorities vet potential visitors by making sure that a temporary visit is indeed the true nature of the visa request. Check with your intended destination’s government website for details on what needs to be included in a such a letter.
The unofficial posture is that few people can afford to live without working for more than six months. Because people coming to the U.S. on B2 visas are not allowed to work, they will in all likelihood be issued a maximum six-month I-94. If the entrant is seeking medical treatment that may quite reasonably be expected to take more than six months, the determining officer can issue a one-year I-94 without consulting a supervisor. A traveler with a B1 professional visa, meaning they have work the State Department has already determined is acceptable under all its conditions, can stay up to three years on a single I-94. In an extreme circumstance, then, a person with a one-month B1 visa could legally stay in the USA for three years, not one month.
In accordance with the agreement signed between the United States and China to extend visa validity, beginning on November 29, 2016, Chinese citizens with 10-year B1, B2 or B1/B2 visas in Peoples’ Republic of China passports will be required to update their biographical and other information from their visa application via a website every two years, or upon getting a new passport or B1, B2, or B1/B2 visa, whichever occurs first.  This mechanism is called EVUS - Electronic Visa Update System.

The B1 professional and B2 tourist -- pleasure travel -- visas are typically issued for six-month periods, but the length is entirely within the decision-making process of the officer who happens to get the case, inspect the application and make the determination. Again, the length of time printed on the visa does not determine how long the visitor may stay in the U.S. Rather, it determines how long the visitor has to make the journey to the U.S., where the I-94 document may or may not be issued that details the length of the stay.

On what basis would she be able to adjust status once in the U.S.? Of course she shouldn't do this. If immigration officials even *think she entered the U.S. on a tourist visa with the intention of immigrating, she'll never adjust status. It's never advisable to enter the U.S. on a tourist visa with the intent of immigrating. http://www.dixonimmigration.com/index.php?pid=2

Some types of visa like B1 may not expire with the expiry of the holder's passport. An unexpired, endorsed visa in an expired passport may be presented for entry into the USA, as long as the visa itself has not been cancelled, is undamaged, is less than 10 years old and is presented with a valid non-expired passport, provided that both passports are for the same nationality.


To travel to the US visa-free, you must have valid ESTA authorization. Once granted, ESTA is usually valid for a period of two years from the date of issuance. During this time, you can make mutiple trips to the US, provided you remain ESTA-eligibile and provided you reason for travel is permissible under the visa waiver program. If your passport expires prior to the two-year point, your ESTA status will no longer be valid. 

Each country has its own visa application requirements. Make sure to check with your destination country’s appropriate government website to find out. Requirements typically include filling out the visa application form, providing your passport for stamping if required, a photograph, and additional documents such as your flight itinerary, hotel booking or letter of invitation.
If Customs and Border Protection (CBP) authorizes your admission to the United States at the designated port of entry, you will receive a stamped Form I-94, Record of Arrival-Departure. If you wish to stay beyond the time indicated on the Form I-94, you may apply for an extension by filing Form I-539, Application to Extend/Change Nonimmigrant Status, with USCIS.
Goods that you declare will be inspected by a biosecurity officer, who will assess the level of risk associated with the goods. In most cases, goods are low risk and will be returned to you after the inspection. However, if a biosecurity officer deems the goods to have some risk you can pay for the goods to be treated, pay to export the goods, or voluntarily dispose of the goods.
This document may be denied for any number of reasons. People with certain infectious diseases, for example, may be told to seek treatment for those diseases before a visa will be issued. They may also be denied to people who could potentially strain the system of the country they are visiting: for example, someone without enough money to get by might be denied a visa out of concern that he or she could rely on public assistance for help.
^ Roberts, Jeff John (12 September 2016). "Homeland Security Plans to Expand Fingerprint and Eye Scanning at Borders". Fortune. Fortune Media IP Limited. Retrieved 24 April 2019. Unlike with documents, it’s very hard for a traveler to present a forged copy of a fingerprint or iris. That’s why the U.S. Department of Homeland Security plans to vastly expand the amount of biometric data it collects at the borders. According to Passcode, a new program will ramp up a process to scan fingers and eyes in order to stop people entering and exiting the country on someone else’s passport.
H-2B temporary skilled and unskilled workers: Depends on the labor certification and the proposed period of employment, plus a period of up to ten days before the validity period of the H-2B petition begins and ten days after it ends. Initial maximum of 12 months, with extensions of up to a year possible, limited by an overall maximum of three years.
^ Lipton, Eric (21 May 2013). "U.S. Quietly Monitors Foreigners' Departures at the Canadian Border". The New York Times. Retrieved 25 April 2019. Long demanded by lawmakers in Congress, it is considered a critical step to developing a coherent program to curb illegal immigration, as historically about 30 percent to 40 percent of illegal immigrants in the United States arrived on tourist visas or other legal means and then never left, according to estimates by Homeland Security officials.
With some countries, the validity of a visa is not the same as the authorised period of stay. The visa validity then indicates the time period when entry is permitted into the country. For example, if a visa has been issued to begin on January 1 and to expire on March 30, and the typical authorised period of stay in a country is 90 days, then the 90-day authorised stay starts on the day the passenger enters the country (entrance has to be between 1 January and 30 March). Thus, the latest day the traveller could conceivably stay in the issuing country is 1 July (if the traveller entered on 30 March). This interpretation of visas is common in the Americas.
I would say a tourist visa (6 month) is best because a fiance visa limits your time and is not one that can be renewed like a tourist visa. You can renew a tourist visa for 6 months. It does not always get approved but it is something that is possible with the tourist and not with the fiance visa. Now if you plan on getting married as stated in the fiance visa then in…

Previously, foreign travelers granted entry by CBP officials received a paper Form I-94 (Arrival/Departure Record). This process is now automated, with some exceptions. If you received a paper Form I-94 or I-94W and failed to turn in your paper Form I-94 Arrival/Departure Record to the commercial airline or CBP when you departed the U.S., see the CBP Website for instructions. Do not send your paper Form I-94 or I-94W to the U.S. Embassy or Consulate General.
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The issuing authority may also require applicants to attest that they have no criminal convictions, or that they not participate in certain activities (like prostitution or drug trafficking). Some countries will deny visas if travellers' passports show evidence of citizenship of, or travel to, a country that is considered hostile by that country. For example, some Arabic-oriented countries will not issue visas to nationals of Israel and those whose passports bear evidence of visiting Israel.
P athletes, entertainers, and artists: The time period necessary to accomplish the event or activity, plus ten days before the validity period of the visa petition and up to ten days after the petition expires. Initially up to five years for athletes, one year for other artists and entertainers. Extensions possible. Ten-year maximum for athletes; no maximum on others. 
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