sentences:  In response the NAS formed a committee, the War Bureau of Consultants (WBC), which issued a report on the subject in February 1942.The report, among other items, recommended the research and development of an offensive biological weapons program.The British, and the research undertaken by the WBC, pressured the U.S. to begin biological weapons research and development and in November 1942 U.S. President Franklin Roosevelt officially approved an American biological weapons program.