; or (bb) to appear and produce documentary evidence before the Secretary. (II) Failure to obey order Any failure to obey an order issued under subclause (I) may be punished by the court described in that subclause as contempt of that court. (3) Separate offense Each violation under this Act shall be a separate offense. (4) Remission or mitigation The Secretary may remit or mitigate any civil penalty assessed under this subsection. (5) Failure to pay (A) In general If a person assessed a civil penalty under paragraph (1) fails to pay the civil penalty, the Secretary may request that the Attorney General institute a civil action to collect the penalty in a district court of the United States for any district in which the person is found, resides, or transacts business, and that court shall have jurisdiction to hear and decide the action. (B) Record; substantial evidence The court described in subparagraph (A) shall— (i) hear the action described in that subparagraph on the record made before the Secretary in a hearing under in paragraph (2)(B)