detain them somewhere - with minimal survival needs, tents to live in. it doesn’t have to cost much. They came illegally and deserve nothing as they wait their deportation or day in court before deportation. To have them loose means innocent people will be harmed - no question about it if they were willing to fight with BP they will harm others.
Here’s how: Build a facility with a wall on three sides, and the open side faces Mexico. When the “refuges” are processed, release them into the facility. They have been released into the US, and they are free to move around, BUT the only open direction is back into Mexico. Have a nice day!