diff --git a/django/forms/__init__.py b/django/forms/__init__.py
index a4b823fefb..160efe652c 100644
--- a/django/forms/__init__.py
+++ b/django/forms/__init__.py
@@ -952,10 +952,7 @@ class USStateField(TextField):
             raise validators.CriticalValidationError, e.messages
 
     def html2python(data):
-        if data:
-            return data.upper() # Should always be stored in upper case
-        else:
-            return None
+        return data.upper() # Should always be stored in upper case
     html2python = staticmethod(html2python)
 
 class CommaSeparatedIntegerField(TextField):