11/Fred
The ruling compares the case of Korematsu with the Hirabayashi ruling the previous year where court held that a curfew based solely on ancestry was justified when at war with the country of ancestry, though apparently only when it was Japan.
supreme.justia.com/cases/federa...
Hirabayashi v. United States, 320 U.S. 81 (1943)
Hirabayashi v. United States