The United States's certification program operates under the Anti-Drug Abuse Act of 1986. This legislation requires that certain assistance be withheld from major drug producing and transit countries and that the President certify every major producing or transit county that cooperated fully with the United States or took adequate steps on its own to address illicit drug production, trafficking, and money laundering. Factors that made 1987 a difficult but not hopeless year in international drug control included increases in the production of coca, opium, and marijuana and several countries' continuing to profit from narcotics cultivation. Diplomatic efforts to encourage international cooperation on narcotics control intensified during 1987 and culminated with the United Nations International Conference on Drug Abuse and Illicit Trafficking. International cooperation is a central segment of the President's National Drug Control Strategy. The Department of State Bureau of International Narcotics Matters coordinates all United States government international drug control activities. The plan for 1988 is to strengthen eradication programs, intensify enforcement efforts, and focus on demand reduction in all countries experiencing drug problems. Tables and appended tables