The United States does not have the political weaknesses of the Weimar Republic, but the broader point is that without global economic cooperation when change is needed, countries could descend into opportunistic nationalism to the detriment of the global economy and the global political environment. Nationalism, coupled with great faith in the power of the government to enact domestic bargains between labor and capital, has been seen before: it was called fascism then. It is a development to be avoided at all costs.
Cf economic nationalism
