Although not considered mandatory authority, the formal and informal opinions released by the ABA Committee on Ethics and Professional Responsibility have served as a persuasive interpretation of the Model Rules for many years. Formal opinions address issues which may apply to practicing attorneys throughout the profession, while informal opinions were issued in response to a specific situation. It is worth noting that the
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State ethics opinions have always been an important source for researching how the rules have been applied in specific instances in their respective jurisdictions. Attempting to locate the full text of state ethics opinions has always been a little troublesome. Traditionally, the best source was the National Reporter on Legal Ethics and Professional Responsibility by Jacobstein, Mersky, and Quist. Although selective, it is a useful compilation of ethics opinions from around the states. Westlaw and LexisNexis now provide access to various state ethics opinions, although neither database provides coverage for more than a select number of jurisdictions. More recently, a number of state bar associations have released the full text of their ethics opinions on their websites. It should be noted that a number of state bars only provide access to this material to bar members, or, if access is provided to non-members, charge a fee for this service.