---
kind: "section"
citation: "31 C.F.R. § 501.720"
title: "31"
number: "501.720"
heading: "Separation of functions."
url: "https://uscodex.org/cfr/31/501.720"
---

# §501.720. Separation of functions.


Any officer or employee engaged in the performance of investigative or prosecutorial functions for the Department in a proceeding as defined in [§ 501.702](/cfr/31/501.702.md) may not, in that proceeding or one that is factually related, participate or advise in the decision pursuant to Section 557 of the Administrative Procedure Act, [5 U.S.C. 557](/usc/5/557.md), except as a witness or counsel in the proceeding.


## Notes

### Source

Source: 68 FR 53642, Sept. 11, 2003, unless otherwise noted.

### Authority

Authority: 8 U.S.C. 1189; 18 U.S.C. 2332d, 2339B; 19 U.S.C. 3901-3913; 21 U.S.C. 1901-1908; 22 U.S.C. 287c, 2370(a), 6009, 6032, 7205, 8501-8551; 31 U.S.C. 321(b); 50 U.S.C. 1701-1706, 4301-4341; Pub. L. 101-410, 104 Stat. 890, as amended (28 U.S.C. 2461 note).

### Source

Source: 62 FR 45101, Aug. 25, 1997, unless otherwise noted.