The Trump administration is planning to expand a procedure to speed up deportations to include undocumented immigrants anywhere in the US who cannot prove they've lived in the US continuously for two years or more.

In doing so, the administration would be provided greater latitude in quickly deporting undocumented immigrants.

The American Civil Liberties Union said Monday it would challenge the plan in court.

"Under this unlawful plan, immigrants who have lived here for years would be deported with less due process than people get in traffic court. We will sue to end this policy quickly," said Omar Jadwat, director of the ACLU's Immigrants' Rights Project, in a statement.