May 5, 1995
In accordance with 5 CFR 2635.105, the regulations in this part apply to employees of the Department of the Treasury and supplement the Standards of Ethical Conduct for Employees of the Executive Branch contained in 5 CFR part 2635. Employees are required to comply with 5 CFR part 2635, this part, and bureau guidance and procedures established pursuant to this section. Department employees are also subject to any additional rules of conduct that the Department or their employing bureaus are authorized to issue. See 31 CFR part 0, Department of the Treasury Employee Rules of Conduct.
https://www.ecfr.gov/cgi-bin/text-idx?SID=3dc58b550390c0a9ea9aa037939c9d5e&mc=true&node=pt5.3.3101&rgn=div5