Bringing back slavery would end it overnight. The solutions can always be worse than the expected outcome of give them everything, reward them for coming and allow them to terrorize citizens. If we really had a tyrant in the white house the invasion would be over.
In reality deporting them all is not only possible but should happen quickly. Pick up, identify and remove should be a single day as a goal. Selling any property, they abandon and leave behind could help fund additional ICE operations. Most of the country wants them out, the opinion of the left shouldn't even be discussed.