Amey Stone of Barron's talks to Rick about insured muni bonds and the extra due diligence needed with these types of securities: "Buying insured bonds of weak credits requires extra legwork, says financial advisor Richard Daskin of RSD Advisors. Investors need to assess the underlying bond and the ability of the insurance company to pay if the issuer defaults. He is comfortable with both National and Assured and thinks they merit higher ratings from credit agencies."