It is more a drifting away, occasionally a resurgent isolationism that crosses right and left.
Their entry into the war made them cross the Rubicon and abandon isolationism forever.
Shutting down military bases and ceasing to deal with other nations with threats and violence is not isolationism.
The main challenge facing the next president will not be to blunt American exceptionalism, But to make sure that American triumphalism is not replaced by a grumpy and irresponsible isolationism.
But it will be an achievement left unrealized unless we have the vision and the courage to stand up to the challenges of economic isolationism, and to offer the leadership to help make it happen.
