"Inherently?" No. But, the poor have the most to lose due to non-enforcement of Immigration laws.

So, are blacks in general anti-immigrant because they are inherent bigots (as you asked)? No.

But, the poor and lower middle class, regardless of race (and those who sympathize with their plight), would naturally be more anti-illegal-immigrant.

[Speaking for myself, not Curly of couse. But, I have seen black citizens embracing the deportations on the news. But that is anecdotal; not sure if a poll has been run on this.]