A non-profit charity founded by Newt Gingrich to promote freedom, faith and free enterprise also served as another avenue to promote Gingrich's political views, and came dangerously close, some experts say, to crossing a bright line that is supposed to separate tax-exempt charitable work from both the political process and such profit-making enterprises as books and DVDs.

The charity, Renewing American Leadership, not only featured Gingrich on its website and in fundraising letters, it also paid $220,000 over two years to one of Gingrich's for-profit companies, Gingrich Communications. It purchased cases of Gingrich's books and bought up copies of DVDs produced by another of the former House speaker's entities, Gingrich Productions.