Biological and Toxin Weapons Convention Profile: Biological and Toxin Weapons Convention (BWC) Events (2) July 23-25, 2001: US Opposes Changes in Biological Weapons Convention; Fearful of International Interference in Own Bioweapons Program 2001-07-23 November 19, 2001-December 7, 2001: Bush Representatives Thwart Bioweapons Restrictions 2001-11-19