I don't think he is against immigration but against uncontrolled immigration. That is a huge difference.
Tony stated the guy was a racist but then couldn't find any evidence to support such a claim, that was the original point of this exchange.
You may think he is not against immigration but he never made a clear point to say immigrants make this country great but we cannot have unlimited open borders. Any statement of that sentiment would support that he does like immigration but not unctrolled. No, he said plainly that increasing foreigners was a bad thing and diversity is not good.