Where should illegal aliens go? They can't be kept out or detained long term and now they can't be sent to areas that are openly accepting to illegal aliens. I guess Democrats can't gerrymander if their future voters are concentrated in the "sanctuary" cities.
If the government chooses not to detain them or deport them then they should release them. There is no logical, valid enforcement reason to expend large amounts of resources busing people hundreds or thousands of miles just to release them somewhere else. You have to buy/hire the buses, you have to provide these people with food and shelter on the trip, you have to provide medical care if there's a problem, you have to provide border patrol agents to provide security as they are still under detention, etc, etc.
Funny how conservatives are all about government waste unless its government waste to accomplish corrupt political goals and to punish brown people. Then you guys are all about the waste.