From the report: "This report provides information on the wide range of programs that the United States is pursuing to secure and eliminate nuclear, chemical, and biological weapons and materials and to prevent hostile nations and terrorist organizations from gaining access to these weapons or the knowledge and materials needed to manufacture and use them. It begins with a brief review of the evolution of these programs, demonstrating how the goals and objectives have changed over the years. It also reviews some of the issues that Congress may confront as it seeks to provide oversight of these programs and reviews budget requests for them. The report then provides information on individual programs that are designed to secure and eliminate nuclear weapons, secure and eliminate nuclear materials, secure borders and improve export controls, eliminate chemical weapons, secure biological pathogens, and redirect scientists with knowledge of CBRN [chemical, biological, radiological and nuclear] weapons."
CRS Report for Congress, R43143
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html