306.1. The president may require, for the purposes of an investigation or inspection, any information relevant to the administration of an Act or regulation the administration of which is under the supervision of the Office.
Every book, register or other document having been examined by the president or produced to him may be copied or photocopied and every copy or photocopy of such book, register or document certified by the president to be a copy or photocopy of the original is receivable as evidence and has the same probative value as the original.