Circular 230 § 10.29
Conflicting interests.
CFR 2001 annual edition (revised as of 2001-07-01) · in effect Jul 1, 1997 to Jul 1, 2003 · last amended by 57 FR 41095, Sept. 9, 1992
No attorney, certified public accountant, enrolled agent, or enrolled actuary shall represent conflicting interests in his practice before the Internal Revenue Service, except by express consent of all directly interested parties after full disclosure has been made.