We are all immigrants?

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Eliot Spitzer has a M-F show In The Arena (7 PM CDT on CNN) which leans left. It is a pretty interesting show, however, last nite Spitzer said: "As Eleanor Roosevelt said, 'We are all immigrants in this country.'"

I don't know whether she said anything so obviously and blatantly false or not, but it does seem to be consistent with the level of discussion on the issue of immigration.

Is it no longer true that making false statements undermines your argument?
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