(a) The General Counsel may impose conditions or restrictions on the testimony of USTR employees including, for example, limiting the scope of testimony or requiring the requester and other parties to the legal proceeding to agree that the testimony transcript will be kept under seal or will only be used or made available in the particular legal proceeding for which testimony was requested. The General Counsel also may require a copy of the testimony transcript at the requester's expense.

(b) USTR may offer the employee's written declaration in lieu of testimony.

(c) If authorized to testify pursuant to this subpart, an employee may testify as to relevant facts within his or her personal knowledge, but, unless specifically authorized to do so by the General Counsel, the employee must not:

(1) Disclose classified, confidential or privileged information; or

(2) For a current USTR employee, testify as an expert or opinion witness with regard to any matter arising out of the employee's official duties or USTR's mission or functions, unless testimony is provided on behalf of the United States. A former employee can provide expert or opinion testimony where the testimony involves only general expertise gained while employed as a USTR employee.