(A) Proceedings for Discipline. Subchapter 9.100 governs the procedure to discipline attorneys. A proceeding under subchapter 9.100 is subject to the superintending control of the Supreme Court. An investigation or proceeding may not be held invalid because of a nonprejudicial irregularity or an error not resulting in a miscarriage of justice.
(B) Local Bar Associations. A local bar association may not conduct a separate proceeding to discipline an attorney.