The Most Iconic (and Cringeworthy) Moments in Talk Show History

Craig Ferguson becomes a U.S. citizen on The Late Show

Scottish comedian Craig Ferguson managed to ace the U.S. citizenship test on national television. Ferguson passed the test back in 2008, documenting the process on his CBS late-night talk show. As it turns out, he knew more about America than most of the people who were actually born there.

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Post originally appeared on Upbeat News.