After taking Manila, MacArthur installed one of his Filipino friends, Manuel Roxas—who also happened to be one of the few people who knew about the huge sum of money Quezon had given MacArthur in 1942—into a position of power that ensured Roxas was to become the next Filipino president. Roxas had been a leading Japanese collaborator serving in the puppet government of José Laurel, but MacArthur claimed that Roxas had secretly been an American agent all the long. About MacArthur's claim that Roxas was really part of the resistance, the American historian Gerhard Weinberg wrote that "evidence to this effect has yet to surface", and that by favoring the Japanese collaborator Roxas, MacArthur ensured there was no serious effort to address the issue of Filipino collaboration with the Japanese after the war.