Cocoa-fiber mats. Effectuating original intent of Congress with respect to duty to be imposed on imported pile mats and floor covering wholly or in chief value of cocoa fiber, report to accompany H. R. 3572 [to amend tariff act of 1930, as amended (U. S. C., 1934 edition, Supp. 4, title 19, sec. 1001, par. 1529 (a))]; submitted by Mr. La Follette.