1. Illegal immigration is already illegal. Cutting back on it is tangential to every other statement about promoting, limiting, or targeting migration.

2. I'm responding to a comment that says "How about door 3: only allow immigration for skilled individuals capable of adding outsized value to our economy?"

And in my capacity as such a person: that attitude makes me not interested in anything else on the table. Hypothetically to demonstrate the point: You could offer me your entire GDP, even after accounting for a business plan where I somehow specifically help you double it, as pay… and I'd turn you down.

Remember that the current state of immigration in the USA is exactly what was being proposed to be changed: the previous desirability is specifically not going to remain.