The order, which would use state and local officers, among others, would represent an enormous expansion of immigration enforcement. But it is unclear how it would be paid for.

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.

President Trump has told the Department of Homeland Security to add 20,000 officers to its deportation force, a move that would include using state and local employees. The order was part of a presidential proclamation issued Friday about pressing immigrants without documentation to leave the US voluntarily,