The answer would be an easy
One of the first things mentioned in our PR class was what a great piece of PR writing the op-ed was. Could it be true that he wrote it himself? A man of good but not great English? Also while he runs a whole country (nbd) he just had a few hours to sit around and write up this well written piece which at the end makes sure to point out how unexceptional America truly is.
Here's an article by the Washington Post discussing this very thing.
-- Another if you want to check it out --
http://www.scribd.com/doc/167987463/Letter-from-Jim-DeMint-to-President-Vladimir-Putin-on-American-Exceptionalism














