> Immigration law demands...

Exactly. And just like I said, this law can be changed by those who wrote it.

If by "those who wrote it" = multiple layers of government branches involving hundreds of different people at any one time and many thousands of real cases testing the law each year a under long slow moving history of precedence, under a set of hard limits of constitutional and administrative law, then yes, you could reduce it to that one sentence if you don't appreciate the nuance of law