European immigrants arriving in Argentina
Immigration means people moving from their native regions into another country to live. People who immigrate are called immigrants. Some are illegal immigrants. Some immigrants are refugees and some ask for political asylum.
If someone wants to immigrate to the United States, that person has to apply to become a legal citizen. If the person is accepted, they will receive a green card. A green card is a piece of evidence stating that the person is trying to legally stay within the country's borders. The person must keep the green card for at least five years in order to become a citizen of the United States of America. (USA-GOV pg. 1)