Until his appointment as Ambassador to Japan, Mondale was a Distinguished University Fellow in Law and Public Affairs at the Hubert H. Humphrey Institute of Public Affairs at the University of Minnesota. In 1990, he established the Mondale Policy Forum at the Humphrey Institute. The forum has brought together leading scholars and policymakers for annual conferences on domestic and international issues. He also served on nonprofit boards of directors for the Guthrie Theater Foundation, the Mayo Foundation, the National Democratic Institute for International Affairs, the Diogenes Institute of Higher Learning, the Prince Hall Masonic Temple, the RAND Corporation, and the University of Minnesota Foundation. His corporate board memberships included BlackRock Advantage Term Trust and other BlackRock Mutual Funds, Cargill Incorporated, CNA Financial, the Encyclopædia Britannica, First Financial Fund, and other Prudential Mutual Funds, Northwest Airlines, and United HealthCare Corporation.