Corporate social monitoring has reached its most systematic form and has had the most practical impact with regard to companies doing business in South Africa. The Sullivan Principles have guided the monitoring system for U.S. companies, of which about 166 remain in South Africa and about 140 have withdrawn. However, corporate social monitoring in South Africa is currently subject to certain tensions. The Rev. Sullivan has called for the withdrawal of U.S. companies, and has himself withdrawn from the monitoring effort.This paper discusses the economic climate for U.S. business in South Africa both historically and currently, the conflicting pressures experienced by U.S. companies remaining there, and the effectiveness of strategies aimed to create pressure for companies to withdraw, including divestment resolutions, purchasing restrictions, and sanctions.