31 C.F.R. § 0.211
Employees shall not intentionally or with willful disregard make false or misleading statements, orally or in writing, in connection with any matter of official interest. Matters of official interest include, but are not limited to, the following: Official reports and any other official information upon which the Department, the Congress, other government agencies, or the public may act or rely; transactions with the public, government agencies or other government employees; application forms and other forms that serve as a basis for any personnel action; vouchers; time and attendance records, including leave records; work reports of any nature or accounts of any kind; affidavits; record of or data concerning any matter relating to or connected with an employee's duties; personnel records; and reports of any moneys or securities received, held or paid to, for or on behalf of the United States.
31 C.F.R. §0.211