; (II) section 301 of the Trade Act of 1974 ( 19 U.S.C. 2411 ); or (III) the International Emergency Economic Powers Act ( 50 U.S.C. 1701 et seq.); and (iv) the decrease in exports described in clause (ii) contributed importantly to such workers’ separation or threat of separation and to the decline in the sales or production of such firm. .