It shall be unlawful for any person importing or assisting in importing any articles from any foreign country into the United States, commonly and systematically to import, sell or cause to be imported or sold such articles within the United States at a price substantially less than the actual market value or wholesale price of such articles, at the time of exportation to the United States, in the principal markets of the country of their production, or of other foreign countries to which they are commonly exported after adding to such market value or wholesale price, freight, duty, and other charges and expenses necessarily incident to the importation and sale thereof in the United States: Provided, That such act or acts be done with the intent of destroying or injuring an industry in the United States, or of preventing the establishment of an industry in the United States, or of restraining or monopolizing any part of trade and commerce in such articles in the United States.
Any person who violates or combines or conspires with any other person to violate this section is guilty of a misdemeanor, and, on conviction thereof, shall be punished by a fine not exceeding $5,000, or imprisonment not exceeding one year, or both, in the discretion of the court.
Any person injured in his business or property by reason of any violation of, or combination or conspiracy to violate, this section, may sue therefor in the district court of the United States for the district in which the defendant resides or is found or has an agent, without respect to the amount in controversy, and shall recover threefold the damages sustained, and the cost of the suit, including a reasonable attorney's fee.
The foregoing provisions shall not be construed to deprive the proper State courts of jurisdiction in actions for damages thereunder.