Any officer or employee of the Service designated by the Attorney General, whether individually or as one of a class, shall have power and authority to administer oaths and to take and consider evidence concerning the privilege of any person to enter, reenter, pass through, or reside in the United States, or concerning any matter which is material or relevant to the enforcement of this chapter and the administration of the Service; and any person to whom such oath has been administered, (or who has executed an unsworn declaration, certificate, verification, or statement under penalty of perjury as permitted under section
1746 of title
28) under the provisions of this chapter, who shall knowingly or willfully give false evidence or swear (or subscribe under penalty of perjury as permitted under section
1746 of title
28) to any false statement concerning any matter referred to in this subsection shall be guilty of perjury and shall be punished as provided by section
1621 of title
18.