Moreover, from May 1948 until July 1951 and again from February 1952 to August 1953, he also served as Minister of Treasury.[9][10] As minister he implemented liberist and monetarist policies, characterized by a strong laissez-faire capitalism, which gained him the enmity of the Italian Communist Party (PCI) and Italian Socialist Party (PSI), as well as harsh criticism from members of Christian Democracy's left-wing, like Giuseppe Dossetti and Giorgio La Pira.[11] The American experts of the Marshall Plan, who arrived in Rome to check the use of Plan's funds, were disconcerted that not a dollar had been spent on a Roosevelt-like public spending policy: the funds had in fact been used exclusively to bring order to the public finance and to stabilize the state budget following the thought of Luigi Einaudi.[12]