In 2001, after the 11 September attacks on the World Trade Center and the Pentagon, President George W Bush and Attorney General John Ashcroft instituted a programme called the National Security Entry-Exit Registration System.
The programme required men over the age of 16 who were living in the United States but were citizens of 25 foreign countries – 24 Muslim-majority countries and North Korea – to be registered and fingerprinted by US authorities.
Men subject to the registration programme challenged the registry (or deportation orders resulting from the programme) in federal courts all over the country, alleging that the registry amounted to unconstitutional ethnic and religious discrimination.

