Physical deportation of tens of millions isn’t going to happen. Better to make it impossible for them to live and work here, and let them self-deport. Start by going after businesses that deliberately and systematically hire illegals. Charge them under RICO as criminal organizations, send the CEOs to prison and seize their assets. People will get the message pronto.
Deport AND Self-Deport...and the other stuff, too.
You can do both/all at the same time.
Sheesh, it’s not rocket science....