He was unable to live with them, due to certain provisions in the anti-Semitic Nuremberg Laws, so that failed to improve their situation.
Instead, he began making efforts to emigrate to the United States; going so far as to seek assistance from Thomas Mann and the art dealer, Karl Nierendorf; all of which proved futile.
Eventually, his struggles and deprivation made him seriously ill, and he died in a provisional Jewish hospital, operated by a Talmud Torah school.
His son, Joachim, classified as a "Half-Jew", was drafted into a labor battalion and died while repairing a bridge in France.
In addition to painting, he worked as an illustrator; providing drawings for the Berliner Illustrirte Zeitung as well as Le Figaro, among others.