What is immigration?

Migration is the general name of population migration activities between different regions. As a noun, it refers to a person or a collection of people (crowd), that is, a collection of floating population; As a gerund, it refers to population migration.

Immigration, or successful immigration, refers to the legal right to permanent residence in the country, that is, the so-called permanent residency, but not necessarily or immediately possessing foreign nationality. Permanent residency means that you can live permanently and legally in a country. The proof of this permanent legal residence is the green card (the word green card originated from the United States, so it is referred to as "green card" because its permanent identity card is light green).

Holding a green card means that the cardholder has the permanent residence in the issuing country, and at the same time, holding a green card can exempt entry visas for a certain period of time. To apply for permanent residence status, you don't need to give up your nationality status, and you can enjoy almost all the benefits of permanent residents (according to different national policies, your rights are different). Green card holders have no right to vote and stand for election.

Relevant regulations

Immigration is not necessarily accompanied by nationality change, including short-term population migration and nationality change. With the development of globalization, the number of international immigrants has greatly increased since the 1990s. Just as demographic changes are important to explain the dynamics of the current account, international migration also plays an important role in the development of global economic imbalances.

In fact, international migration plays a structural or long-term role in changing the demographic structure of destination countries and source countries. Generally speaking, during the period covered by this study, the international population movement showed the same trend of population inflow from high-income countries and population loss from low-income countries.