What is a visa?
No it's not your credit card. A visa is a travel document issued by authorized government agencies to foreign citizens applying to enter, exit from or transit through the host country's territory based on the host country's laws and regulations.
In accordance with international law and practice, any sovereign state is entitled to decide on whether or not to allow a foreign citizen to enter or exit from its territory, and whether to issue a visa, decline a visa application or to cancel an issued visa in accordance with its national laws.
In accordance with international law and practice, any sovereign state is entitled to decide on whether or not to allow a foreign citizen to enter or exit from its territory, and whether to issue a visa, decline a visa application or to cancel an issued visa in accordance with its national laws.
CHINA ENTRY REQUIREMENTS FOR U.S. CITIZENS
To enter China, you need a visa as well as six months' validity remaining on your passport. If you do not have a valid passport and the appropriate Chinese visa, you will not be allowed to enter China, you will be fined, and you will be subject to immediate deportation. U.S. citizens traveling to China may apply for up to a one-year multiple-entry visa. Check your U.S. passport before applying for a visa to make sure that it has one year or more validity remaining; otherwise, you may be issued a visa for less than the time you request. The Chinese Embassy and consulates general in the United States do not always issue maximum validity visas even if requested to do so. A multiple-entry visa is essential if you plan to re-enter China, especially if you plan to visit either Hong Kong or Macau and return to China. Source: U.S. State Department State
China sample visa
The following is a sample of a China visa (actual visas would be located on a visa page in your passport).
Vietnam entry requirements for u.s. citizens
In order to enter Vietnam, you will need a valid passport with at least six months validity remaining and a Vietnamese visa, a visa exemption document, or a written approval letter for a visa upon arrival. If you arrive without an appropriate Vietnamese visa, exemption document, or written approval for a visa upon arrival, you will not be permitted to enter and will be subject to immediate deportation. Vietnamese visas are usually valid for only one entry, unless the traveler specifically requests a multiple-entry visa, for which there may be an increased fee. If you are planning to leave Vietnam and re-enter from another country, be sure that your visa is multiple entry. If it is only single entry, you will have to obtain another visa prior to returning to Vietnam. Source: U.S. Department of State
Vietnam sample visa
Visa requirements for u.s. citizens
What is a passport?
United States passports are passports issued to citizens and non-citizen nationals of the United States of America. They are issued exclusively by the U.S. Department of State. Source: U.S. Department of State
