The Department of the Treasury, with the concurrence of the Office of Government Ethics, is issuing this final rule to amend the Supplemental Standards of Ethical Conduct for Employees of the Department of the Treasury (Supplemental Regulations) that govern the use of national bank credit cards by employees of the Office of the Comptroller of the Currency (OCC). This final rule amends the Supplemental Regulations to follow more closely the statutory restrictions on the use of national bank credit cards by OCC employees and to increase OCC supervisors' flexibility in making work assignments.