Margaret Thatcher
In the Shadow Cabinet

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 allowed her 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. Before the 1970 general election, she was promoted to shadow transport spokeswoman and later to education.

In 1968, Enoch Powell delivered his "Rivers of Blood" speech in which he strongly criticised Commonwealth immigration to the United Kingdom and the then-proposed Race Relations Bill. When Heath telephoned Thatcher to inform her that he would sack Powell from the Shadow Cabinet, she recalled that she "really thought that it was better to let things cool down for the present rather than heighten the crisis". She believed that his main points about Commonwealth immigration were correct and that the selected quotations from his speech had been taken out of context. In a 1991 interview for Today, Thatcher stated that she thought Powell had "made a valid argument, if in sometimes regrettable terms".

Around this time, she gave her first Commons speech as a shadow transport minister and highlighted the need for investment in British Rail. She argued: "f we build bigger and better roads, they would soon be saturated with more vehicles and we would be no nearer solving the problem." Thatcher made her first visit to the Soviet Union in the summer of 1969 as the Opposition transport spokeswoman, and in October, delivered a speech celebrating her ten years in Parliament. In early 1970, she told The Finchley Press that she would like to see a "reversal of the permissive society".
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