Immigration (noun)

1. 1. the action of coming to live permanently in a foreign country.
2. 2. the process of migrating to a country to settle there, especially as a refugee.

Origin:

Late 17th century: from latin immigratio(n-), from immigrare "come into" (see immigrant).

Examples:

1. Immigration laws have been tightened.
2. The country has seen a surge in immigration.
3. The immigration process can be long and difficult.
4. The country's policy on immigration is controversial.
5. The immigration debate has been ongoing for years.