an outer sole and all or part of the upper, work footwear, and except footwear designed to be protective that is incomplete in its condition as imported), valued at more than $16 per pair, designed to be worn in lieu of, but not over, other footwear as a protection against water, oil, grease, or chemicals or cold or inclement weather where such protection includes protection against water that is imparted by the use of a laminated textile fabric (provided for in subheading 6404.19.20 of the Harmonized Tariff Schedule of the United States). . 5. Studies on state of domestic footwear industry and probable effect of expanded duty-free treatment of footwear articles (a) Study on state of domestic footwear industry (1) In general The President shall include in each of the first 6 annual reports under section 504 of the Trade Act of 1974 ( 19 U.S.C. 2464 ) submitted after the date of the enactment of this Act the results of a study on the state of the footwear manufacturing industry in the United States during the year preceding the submission of the report. (2) Elements Each study required under paragraph (1) shall focus on changes to the categories of footwear manufactured in the United States during the year covered by the study for the purpose of accurately determining which footwear categories are manufactured in the United States. (b) Study on probable economic effect of expanded duty-Free treatment To support efforts by manufacturers in the United States to expand production of footwear, in conducting any study of the probable economic effect of providing duty-free treatment under title V of the Trade Act of 1974 ( 19 U.S.C. 2461 et seq.) to footwear articles, the United States Trade Representative shall request that the United States International Trade Commission not only examine current domestic production of like or directly competitive articles, but also identify any articles for which domestic production at a commercial level is likely to occur within the next year.