29 CFR 501.7: Cooperation with Federal officials.

All persons must cooperate with any Federal officials assigned to perform an investigation, inspection, or law enforcement function pursuant to 8 U.S.C. 1188 and this part during the performance of such duties. WHD will take such action as it deems appropriate, including initiating debarment proceedings, seeking an injunction to bar any failure to cooperate with an investigation, and/or assessing a civil money penalty therefor. In addition, WHD will report the matter to OFLC, and may recommend to OFLC that the person's existing temporary agricultural labor certification be revoked. In addition, Federal statutes prohibiting persons from interfering with a Federal officer in the course of official duties are found at 18 U.S.C. 111 and 114.