If anyone has more knowledge about this let me know but...
I think the decisions about who to detain are typically arbitrary and decided by that particular agent at the time.
I think the decisions about who to detain are typically arbitrary and decided by that particular agent at the time.
But you are right in principle. Letting people through because they look important is a big security hole.
Also detaining the former Norwegian PM would make it look less like they're targeting specific groups.