The new directives also allow Customs agents to send some people directly back to Mexico, whether they’re Mexican or not. Under previous administrations, people from Mexico and Canada could be deported directly back home. But people from all other countries, such as from Central America, had to be detained until they could be flown back to their country of origin.

The memos do not mention the idea of using National Guard troops along the southwest border, as reported by several media outlets last week.

On the campaign trail, Trump regularly highlighted crimes committed by undocumented crimes and embraced the families of the victims of those crimes. Now, there will be a permanent office within ICE to carry on that message.

The Victims of Immigration Crime Engagement Office, or VOICE, establishes a process to keep victims and their families informed about the status of criminal cases against the undocumented immigrants and any followup deportation proceedings. The new orders eliminate protections that had been granted to undocumented immigrants under the federal Privacy Act, meaning ICE will now publicly distribute information about these cases.

"I direct the Director of ICE to immediately reallocate any and all resources that are currently used to advocate on behalf of illegal aliens ... to the new VOICE Office," Kelly wrote in one directive.

Contributing: David Jackson