To extend and modify the temporary suspension of duty on Carfentrazone.

Amends the Harmonized Tariff Schedule of the United States to extend, through December 31, 2011, the temporary suspension of duty on a-2-Dichloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzene-propanoic acid, ethyl ester (carfentazone ethyl) (CAS No. 128639-02-1) and any formulations containing such compound.