You still working that bad analogy?
Guns are inanimate, and can't cause anything.
Immigrants, being humans, have free will. Therefore, they can be causative agents.
Lawyering. Immigration policy (the term I in fact used) is inanimate, and can't cause anything.
Immigrants, being humans, have free will. Therefore, they can be causative agents.
Gun users, being humans, &c.