Any person injured by a violation of paragraph (1) may bring an action in any district court of the United States in which the defendant resides or is found or has an agent, without regard to the amount in controversy, or in any other court of competent jurisdiction, and shall be entitled to recover three times the amount of the damages sustained, and the cost of suit, including a reasonable attorney’s fee. Any such action shall be brought within 4 years from the date of the occurrence of the violation.