Donald Trump has ordered the Department of Homeland Security to add at least 20,000 officers to enforce his deportation policies. The directive was issued on Friday and forms part of the administration's plan to incentive undocumented immigrants to self-deport.

Immigrants in the United States illegally are being told to voluntarily self-deport "or remain and face the consequences," President Donald Trump warned in a new executive order.

Trump says illegal immigrants who stay in America face "significant jail time, enormous financial penalties, confiscation of all property" and deportation.