Home › CFR › Title 25 › Part 51625 CFR Part 516 — Testimony of Commissioners and Employees and Former Commissioners and Former Employees Respecting Official Duties; Response to Subpoena§ 516.1— What is the purpose of this part and to whom does it apply?§ 516.2— When may a person to whom this part applies give testimony, make a statement or submit to interview?§ 516.3— When may a person to whom this part applies produce records?§ 516.4— How are records certified or authenticated?