Rajchman remained chairman of the board at UNICEF until 1950 and refused to be paid for his work. In the context of the nascent cold war and Stalinism in Soviet block countries, Rajchman was subpoenaed in the McCarthy period: he abruptly left for France and never returned to the United States. At the same time, the Polish communist authorities withdrew his Polish passport and he was not reissued one until the post-Stalinist period began in 1956.
Rajchman held the position of chairman at UNICEF until 1950 and declined payment for his work. During the early cold war era and under Stalinist control in Soviet-block nations, Rajchman was summoned during McCarthy's tenure: he left France and never returned to the United States. Simultaneously, Polish communist authorities stripped him of his passport and it wasn't reissued until after 1956.