Not meant to be a generalization or taken that way... I'll say that some are, and I know from experience.
I would imagine if there was something called a "bigotry index" then the republicans would score higher than the democrats.
Yet America has bent over backwards to allow immigration. The majority of the people in this country are only a couple generations descended from immigrants. Including members of congress.
So I think we indeed have demonstrated in the past the willingness and ability to do things in a fair and just manner.
So it seems the issue no longer is immigration. It's that if you don't agree with someone elses "anything goes" attitude, you are automatically branded a KKK member.
The "racist" mantra has lost almost all credibility.