Deportation is the expulsion of a person or group of people by a state from its sovereign territory. The actual definition changes depending on the place and context, and it also changes over time. A
Certificate of identity of an individual seeking re-entry to the United States during the Chinese Exclusion Act era, among the Chinese deportation records of the US District court, Los Angeles County, California
People being deported during the Warsaw Ghetto Uprising
Anarchists protesting against deportations
Illegal immigration is the migration of people into a country in violation of that country's immigration laws, including unauthorized entry or continued residence after the expiration of a valid visa.
Deportation
…expulsion] order in cases where the person concerned does not follow it voluntarily". Others differentiate removal of legal immigrants (expulsion) from illegal immigrants (deportation). Deportation in the most general sense, in accordance with International Organization for Migration, treats expulsion and deportation as…
An asylum seeker that has illegally crossed from the United States to Canada is being detained.
Arrested refugees/immigrants in Fylakio detention centre, Evros, northern Greece
Migrant family freighthopping in southern Mexico from Central America
Border patrol at sea by the US Customs and Border Protection