Brauer was still in Berlin hoping to be allowed to emigrate in 1938 but there were problems on all sides. Hopf wrote to Richard Brauer, already in the United States in 1938:
Brauer ay pa rin sa Berlin hoping na pinahihintulutan sa mandayuhan sa 1938 ngunit may mga problema sa lahat ng gilid. Hopf wrote sa Richard Brauer, na sa Pilipinas sa 1938: