The Japanese Emperor Hirohito and all members of the imperial family such as Prince Asaka, were not prosecuted for involvement in any the three categories of crimes. Herbert Bix explains that "the Truman administration and General MacArthur both believed the occupation reforms would be implemented smoothly if they used Hirohito to legitimise their changes." As many as 50 suspects, such as Nobusuke Kishi, who later became Prime Minister, and Yoshisuke Aikawa, head of the "zaibatsu" Nissan Group, and future leader of the Chuseiren (a body representing small and medium-sized Japanese companies) were charged but released without ever being brought to trial in 1947 and 1948. Shiro Ishii received immunity in exchange for data gathered from his experiments on live prisoners. The lone dissenting judge to exonerate all indictees was Indian jurist Radhabinod Pal.