What are the logistical challenges of a 'Mass Deportation Now!' policy?

How can a large-scale deportation operation in the US be managed? Consider funding, execution details, and how international refusal to accept deportees might affect the plan.

i think this plan is a logistical mess. fnding and legal issues aside, international backlash and practical gaps make it highly risky. not many details on safely relocating deportees, so its just a recipe for a major snafu.