bunal under subparagraph 26(1)(a)(i.3) of that Act, that textile and apparel goods set out in Appendix 1.1 of Annex 300-B of Chapter Three of the North American Free Trade Agreement and entitled to the United States Tariff or the Mexico Tariff are being imported in such increased quantities, in absolute terms or relative to the domestic market for the goods, and under such conditions as to cause s