First, I want to point out that just because you might see anti-immigrant parties—and by no means is this a given—that doesn't mean they will be the ones making policy, which relates to my other point. They might not end up in government. I know of some research which shows that even if they end up in government, we don't necessarily see a substantial shift to actual changes in policy. That's a big caveat I do want to make.
On September 28th, 2016. See this statement in context.