Retreat to Fortress America is also a response to nuclear proliferation, which will occur as the US retreats from its role as world policeman. Another factor i

Retreat to Fortress America is also a response to nuclear proliferation, which will occur as the US retreats from its role as world policeman. Another factor is the desire to retire federal government debt by dollar devaluation. Onshoring of manufacturing by high tariffs would be preparatory for this.