A bill to extend the temporary suspension of duty on modacrylic staple fibers containing 35 percent or more but not over 85 percent by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, not pigmented (ecru), crimped, with an average decitex of 1.9 (plus or minus 10 percent) and fiber length of 51 mm (plus or minus 10 percent).