The Visa Policies
The main reasons states impose visa restrictions on foreign nationals are to curb illegal immigration, address security concerns, and apply reciprocity for visa restrictions imposed on their own nationals.
Typically, countries impose visa restrictions when they consider that certain travelers may be more likely to overstay, immigrate without authorization, or present security risks. Visa restrictions may also be used when governments respond to restrictions imposed on their own citizens.
Country's visa policy
Some countries apply the principle of reciprocity in their visa policy. A country's visa policy is called reciprocal if it imposes visa requirements against citizens of countries that impose visa requirements against its own citizens.
The opposite is less common: countries rarely lift visa requirements for every country that lifts visa requirements for their own citizens unless there is a prior bilateral or regional agreement.
Visa Fees
A fee may be charged for issuing a visa. These fees are often reciprocal. For example, if one country charges another country’s citizens a visa fee, the other country may charge the same or similar fee in return.
Visa fees may also depend on embassy policy, processing speed, visa validity, number of entries, biometric collection, document review, courier services or expedited processing.
Entry restrictions on foreign citizens
Government authorities usually impose administrative entry restrictions on foreign citizens in three broad ways: countries whose nationals may enter without a visa, countries whose nationals may obtain a visa on arrival, and countries whose nationals require a visa in advance.
Travelers who require a visa in advance are usually advised to obtain it from an embassy, consulate, official online portal, or authorized visa application route before departure.
Foreign nationalities
Visa policies can differ by nationality, passport type, travel purpose, duration of stay, entry point, and travel history. Some countries allow electronic visas for specific nationalities, while others require embassy processing or visa-on-arrival approval at selected entry points only.