Immigration detention is the policy of holding individuals suspected of visa violations, illegal entry or unauthorised arrival, and those subject to deportation and removal in detention until a decision is made by immigration authorities to grant a visa and release them into the community, or to repatriate them to their country of departure. Mandatory detention is the practice of compulsorily detaining or imprisoning people seeking political asylum, or who are considered to be illegal immigrants or unauthorised arrivals into a country. Some countries have set a maximum period of detention, while others permit indefinite detention.
In the United States, a similar practice began in the early 1980s with Haitians and Cubans detained at Guantanamo Bay, and other groups such as Chinese in jails and detention centres on the mainland. The practice was made mandatory by legislation passed in 1996 in response to the Oklahoma City bombing, and has come under criticism from organizations such as Amnesty International, Human Rights Watch, Human Rights First, all of whom have released major studies of the subject, and the ACLU About 31,000 non-citizens are held in immigration detention on any given day, including children, in over 200 detention centres, jails, and prisons nationwide.
The T. Don Hutto Residential Center opened in 2006 specifically to house non-criminal families. There are other significant facilities in Elizabeth, New Jersey, Oakdale, Louisiana, Florence, Arizona, Miami, Florida, Seattle, York, Pennsylvania, Batavia, New York, Aguadilla, Puerto Rico and all along the Texas–Mexico border.