Rules of Professional Conduct: Rule 5.5--Unauthorized Practice
A lawyer shall not:
(a) Practice law in a jurisdiction where doing so violates the regulation of the legal profession in that jurisdiction; or
(b) Assist a person who is not a member of the bar in the performance of activity that constitutes the unauthorized practice of law.
 This rule concerns the unauthorized practice of law by District of Columbia Bar members in other jurisdictions and assistance by District of Columbia Bar members in the unauthorized practice of law by lawyers not admitted in this jurisdiction or by non-lawyers. The provisions concerning the unauthorized practice of law in the District of Columbia, including those activities in which a lawyer not admitted in the District of Columbia may and may not engage, are set forth in Rule 49 of the Rules of the District of Columbia Court of Appeals.