Rule Summary: Prohibits dealers from improperly using municipal securities or funds held on behalf of another person, guaranteeing customers against loss in customer accounts and transactions, and sharing in profits and losses of customer accounts and transactions by any dealer.

Rule Summary: Prohibits dealers from engaging in municipal securities business and municipal advisors from engaging in municipal advisory business with municipal entities if certain contributions have been made to officials of such municipal entities within the preceding two-year period, and requires dealers and municipal advisors to disclose certain political contributions and other information.