Any person who is found by the Secretary of Commerce after notice and an opportunity for a hearing in accordance with
section 554 of title 5, United States Code, to have committed an act that is unlawful under subsection (a), is liable to the United States for a civil penalty. The amount of the civil penalty may not exceed $1,000 for each violation. Each day of continuing violation constitutes a separate offense. The amount of the civil penalty shall be assessed by the Secretary of Commerce by written notice. In determining the amount of the penalty, the Secretary of Commerce shall take into account the nature, circumstances, extent, and gravity of the prohibited act committed and, with respect to the violator, the degree of culpability, any history of prior violations, ability to pay, and such other matters as justice may require.