Well I just had to look that up, and the only reference to "Nazis" I can find on his site is in this
speech, where he's saying that our form of limited government is a good thing and that governments that place the state above the rights of individuals are bad.
We are a nation that limits the reach of government because we understand that no government should have a right to impose itself between human beings and their lawful aspirations to make of their lives what they will.
We limit government because the greatness of our country, our productivity, resourcefulness and compassion, is not a product of the state's decrees or prerogatives, but derived from the free exercise of the rights and responsibilities of liberty.
We are a nation that limits government so that government cannot limit us.
I believe this notion of limited government will stand as our lasting contribution to the world. We are proof that people can frame a government to serve as an instrument of the people, not the other way around.
And by our actions both at home and abroad we will prove once more, as we did in the last century, that regimes like the Nazis, or the fascists, or the Soviet Union, or the Taliban, which place the interests of the state or a movement or a cause above the rights of the people, is on the wrong side of history.
This bit is not fear mongering, it's part of a spiel about limiting the power of government, and making sure none of the three branches of our government get more power than any other, or the system would break down.
Can you give me a full context quote about what you are talking about Iavas? I fully admit I'm just starting to learn about the man and his viewpoints, but what you are claiming he said does not seem consistant with what I've read so far.