Iceland–United States relations to a number of the same international organizations, including the United Nations, the Organization for Security and Co-operation in Europe, Arctic Council, Organisation for Economic Co-operation and Development, International Monetary Fund, World Bank, and World Trade Organization. Only two U.S. presidents have visited Iceland whilst in office: Richard Nixon in 31 May-1 June 1973 and Ronald Reagan in 9–12 October 1986. President Richard Nixon was the first U.S. president to visit Iceland when he visited on 31 May - 1 June 1973. Reagan attended the Reykjavík Summit in 9–12 October 1986 with Soviet leader Mikhail Gorbachev. It was a highly
Nancy Reagan failed to include some $3 million worth of fashion items between 1983 and 1988 on their tax returns; they were billed for a large amount of back taxes and interest, which was subsequently paid. After President Reagan revealed that he had been diagnosed with Alzheimer's disease in 1994, she made herself his primary caregiver, and became actively involved with the National Alzheimer's Association and its affiliate, the Ronald and Nancy Reagan Research Institute in Chicago, Illinois. In April 1997, Nancy Reagan joined President Bill Clinton and former Presidents Ford and Bush in signing the Summit Declaration of Commitment in advocating