The Municipal Securities Rulemaking Board recently filed several rule proposals with the Securities and Exchange Commission that focus on fair dealing obligations of dealers in municipal securities. The rule proposals include proposed MSRB Rule G-47 (Time of Trade Disclosure), proposed revisions to MSRB Rule G-19 (Suitability), proposed MSRB Rules D-15 and G-48 (Sophisticated Municipal Market Professionals), and proposed revisions to certain related interpretive guidance.