Success required the use of Secretary of State [[George Marshall]]’s enormous prestige, evident in his speech<ref>For text see [http://www.loc.gov/exhibits/marshall/mars1.html "Marshall Announces His Plan"]</ref> at Harvard University in June 1947 and of course in the informal name of the whole program. Even more essential was close collaboration with the Republicans who controlled Congress, especially their foreign policy leader, Senator [[Arthur Vandenberg]]. Vandenberg, who had shepherded the Truman Plan through Congress in 1947, was a critical supporter and won Congressional approval for the much more expensive Marshall Plan. All of Europe was invited to join, along with much of Latin America.<ref>Switzerland did not officially join, in order to preserve its neutrality. However it was at least partly incorporated into the ERP economic system through the 1949 off-shore trade agreement.</ref> | Success required the use of Secretary of State [[George Marshall]]’s enormous prestige, evident in his speech<ref>For text see [http://www.loc.gov/exhibits/marshall/mars1.html "Marshall Announces His Plan"]</ref> at Harvard University in June 1947 and of course in the informal name of the whole program. Even more essential was close collaboration with the Republicans who controlled Congress, especially their foreign policy leader, Senator [[Arthur Vandenberg]]. Vandenberg, who had shepherded the Truman Plan through Congress in 1947, was a critical supporter and won Congressional approval for the much more expensive Marshall Plan. All of Europe was invited to join, along with much of Latin America.<ref>Switzerland did not officially join, in order to preserve its neutrality. However it was at least partly incorporated into the ERP economic system through the 1949 off-shore trade agreement.</ref> |