diff --git a/holidays/countries/united_states.py b/holidays/countries/united_states.py
index 51bde89a..3b2c6a94 100644
--- a/holidays/countries/united_states.py
+++ b/holidays/countries/united_states.py
@@ -214,8 +214,7 @@ class UnitedStates(ObservedHolidayBase, ChristianHolidays, InternationalHolidays
 
         # Columbus Day
         if self._year >= 1937 and (
-            self.subdiv is None
-            or self.subdiv
+            self.subdiv
             in {
                 "AS",
                 "AZ",