No matter how much progress technology brings, there will always be tasks--and not just in agriculture--which cannot be done by machine.   And no latter-day Edison will change this.

So there ought to be a path to citizenship for illegal immigrants--and it should be done in tandem with raising the minimum wage.

But just making illegal immigrants legal will itself have the effect of raising wages for all workers in fields now with illegal workers--since they will not be able to be exploited as easily. As we've discussed before.