So what? As long as it is legal chaos.
The point is you cannot rationally oppose immigration purely because your prime directive is following laws. Laws can be whatever you want them to be. If there isn't some higher reason you choose to make this thing legal or that thing illegal, then tmlaws serve no purpose whatsoever.
Why have laws? Why have a country? Why have any degree of exlusivity about who is a citizen and who isnt? All these questions require higher ideals than si.ply following law, whatever it happens to be.