Can Trump really deport 11 million people? Will he deploy the military? Who is “border czar” Tom Homan? Here’s what we’ve learned so far.

Trump has also said he would invoke the Alien Enemies Act of 1798, to expel suspected members of drug cartels without due process. That archaic law allows for summary deportation of people from countries with which the U.S. is at war, that have invaded the United States, or have committed “predatory incursions.”

The lawsuit alleges that U.S. Immigration and Customs Enforcement has failed to respond to requests for basic information about matters, including flights.