That's an ad hominem. Rather than debating the merits of his suggestion, you're attacking his person.
Furthermore, it's not unreasonable for people living in one country to have opinions on the policies of others, especially when it's something like taking in refugees which has strong influences on a global scale.
Furthermore, it's not unreasonable for people living in one country to have opinions on the policies of others, especially when it's something like taking in refugees which has strong influences on a global scale.