Hjalmar Schacht
In the 1930s, despite the rise of the Nazi Party, Warburg felt there was hope for the future in Germany and tried to wait out the Nazi crisis. From 1933, he served on the board of the German Reichsbank under governor Hjalmar Schacht. He sold the bank because the 1935 Nuremberg laws set the framework and campaign of Aryanization. He then emigrated to the United States in 1938.