If, after notification by the Secretary of the Department's order penalizing any person under §§ 2108 and 2114 of this title, denying registration under § 2104 of this title, or cancelling registration under § 2115 of this title, any aggrieved person shall so demand in writing, the Secretary shall hold a hearing. At such hearing a record shall be kept of all evidence and testimony, which shall be under oath, and of the Secretary's findings and decisions. Based on the evidence presented and the law set forth in this chapter, as well as regulations adopted pursuant thereto, the Secretary shall affirm, revoke or modify the Department's original order.