In 1967, the United States Embassy chose Thatcher to take part in the International Visitor Leadership Program (then called the Foreign Leader Program), a professional exchange programme that gave her the opportunity to spend about six weeks visiting various US cities and political figures as well as institutions such as the International Monetary Fund. Although she was not yet a Shadow Cabinet member, the embassy reportedly described her to the State Department as a possible future prime minister. The description helped Thatcher meet with prominent people during a busy itinerary focused on economic issues, including Paul Samuelson, Walt Rostow, Pierre-Paul Schweitzer and Nelson Rockefeller. Following the visit, Heath appointed Thatcher to the Shadow Cabinet as Fuel and Power spokeswoman. Prior to the 1970 general election, she was promoted to Shadow Transport spokeswoman and later to Education.