Stephen Miller, President Trump's top policy adviser, said Friday the White House is exploring the option of suspending habeas corpus, the constitutional provision that protects from unlawful detainment.

Stephen Miller, a top aide, repeated a justification used in the immigration crackdown: that the country is fighting an invasion. But it is unclear if the president has the power to take such a step.

The Trump administration is "actively looking at" the possibility of suspending the writ of habeas corpus to handle people the administration says aren't in the country legally, White House deputy chief of staff Stephen Miller said Friday.