Why do countries require visas?

Question

and these requirements change for different countries?

Answer 1

A visa (short for the Latin carta visa, lit. "the document having been seen") is a document issued by a country giving a certain individual permission to formally request entrance to the country during a given period of time and for certain purposes (see below for caveats and exceptions). Most countries require possession of a valid visa as a condition of entry for foreigners, though there exist exemption schemes (see passport for examples of such schemes). Visas are typically stamped or attached into the recipient's passport, or are sometimes issued as separate pieces of paper.

Visas are associated with the request for permission to enter (or exit) a country, and are thus, for some countries, distinct from actual formal permission for an alien to enter and remain in the country. While a visa for the European Schengen area constitutes the formal permission to enter, according to the conditions, in other cases a visa does not guarantee admission into the country for which the alien has the visa. This formal permission is typically granted by stamping the visa and, in some cases, by providing an additional document as proof of status, such as the United States' I-94. The common phrase "he has to leave because his visa has expired" is thus, strictly speaking, incorrect: the visitor's status has expired, the visa may or may not have.

Some countries, such as some states of the former Soviet Union, require that their citizens, and sometimes foreign travelers, obtain an exit visa in order to be allowed to leave the country.

Answer 2

That relies upon on the courting between the rustic reported interior the passport and the rustic that became visited by ability of the passport holder. yet many times, if u . s . a . A do not require visa to passport holders from u . s . a . B, u . s . a . B additionally do not require visa to passport holders from u . s . a . A. the comparable each and every now and returned is going in opposite, if u . s . a . A require visa to passport holders from u . s . a . B, u . s . a . B additionally require visa to passport holders from u . s . a . A. each and every now and returned international locations that don't require visa to go into many times recommend that they have a shared database with the international locations of the pasport holders, or they have particular incentives to furnish no visa get entry to (tourism, human beings smuggling, boost family members, etc). the u . s . case in point is very restrictive and problematic on giving visa, whilst international locations which incorporate Indonesia tend to in hassle-free terms provide visa as a pseudo get entry to value and subsequently fairly comfortable on giving visa.

Answer 3

Countries need to have control over who crosses their border. Passports offer one level of control. Visas allow people to remain in a country, rather than simply visit it, so the standards for that must be a little higher. They change for different countries simply because each country is different. One country may want to attract young tradesmen, another may want to attract teachers, yet another may want to attract medical professionals. Each will raise certain standards to ensure that they do not get an oversupply of one type of immigrant, but encourage the immigration of the kind of people they need to bolster their economy.

Answer 4

So they know who is coming into their country and can verify they are who they claim to be. And make sure you leave and not stay to suck off the social welfare system.
Different countries can have different regulations and requirements. If you have a question about a specific country's requirements, look up the contry here:
http://travel.state.gov/travel/tips/brochures/brochures_1229.html

Answer 5

the requirements are different because of difference in the political relationship between the two countries.

Answer 6

They want to know whose coming into their countries, and why. How long will you be planning on visiting..when will you go home!
Some countries check into your criminal records.. and that is as it should be..

Answer 7

So they know basically what your doing there who your going to be seeing and how long your visit is going to be. Why because we don't want nobody here planning to blow us up sky high and taking our jobs which we can't get anyways lol

Answer 8

Because American Express costs too much to have!!

Answer 9

to keep track of the tired the poor and the stinky who want to blow themselves up sometimes

Answer 10

Because they don't take MasterCard