The Secretary may bring an action under this section to restrain violations of this chapter. The Solicitor of Labor may appear for and represent the Secretary in any litigation brought under this chapter. In any action brought under this section, the district courts of the United States shall have jurisdiction, for cause shown, to issue temporary or permanent restraining orders and injunctions to require compliance with this chapter, including such legal or equitable relief incident thereto as may be appropriate, including, but not limited to, employment, reinstatement, promotion, and the payment of lost wages and benefits.