Our biggest imports from Mexico: agricultural products, motor vehicles, electronics, machinery, and mineral fuels.
In other words, economic goods that will directly impact the middle class consumer price index, at a pace that will almost certainly outstrip job creation. And the jobs that will be created will be more expensive for consumers to support, thus deepening inflation.
So he can build a wall that has no hope of curtailing illegal immigration.
You wanted him, Rust Belt? You've got him.