Trump denies reading Hitler's "Mein Kampf" even as he doubles down on anti-immigration rhetoric

For the second time in a week, former President Donald Trump told crowds of supporters that immigrants coming to the U.S. illegally were damaging the "blood" of the country, echoing words used by Nazi leader Adolf Hitler. 

"It's true that they're destroying the blood of our country. That's what they're doing," Trump told Iowans at a commit-to-caucus event in Waterloo Tuesday evening. "They don't like it when I said that and I never read 'Mein Kampf.' They said, 'Oh, Hitler said that in a much different way.'"

In Hitler's manifesto "Mein Kampf," the dictator wrote that, "All great cultures of the past perished only because the original creative race died out from blood poisoning."