The introduction, delivery for introduction, manufacture for introduction, sale, advertising, or offering for sale, in commerce, or the transportation or causing to be transported in commerce, or the importation into the United States, of any textile fiber product which is misbranded or falsely or deceptively advertised within the meaning of this subchapter or the rules and regulations promulgated thereunder, is unlawful, and shall be an unfair method of competition and an unfair and deceptive act or practice in commerce under the Federal Trade Commission Act [15 U.S.C. 41 et seq.].