[MikeWaters]

I've never heard this, but here's an idea: offer buy-out packages to illegal immigrants.

We pay them to leave. By agreeing to voluntarily leave, they get money, but they also get to be on the legal immigration list (whether that is a lottery thing or what, but it is the normal immigration channels).

If they return illegally after accepting this buy-out, there would be penalties of one kind or another. I.e. the disincentive would be quite high.

Deporting people all across the country is not practical, nor cost efficient.