(1)There have been a few referrences on this thread to a plot in the 1930s to use a retired general to seize the White House. I believe that the general involved was not Smedley Butler, who during much of the 1930s was associated with the popular front rather than the right e.g., he was a leader of the American League Against War and Fascism. A right-wing group did attempt to set up a retired chief of staffof the U.S. Army named George Van Horn Mosely, if I remember correctly, as a man on horseback, but the "plot" never got very far. Various pro-New Deal journalists and congressional investigators, pursuing their own agendas, probably made it out as more of a threat than it was.
(2)As to reasons for Hitler's economic exploits in the first few years of his regime, it would be worth looking at the effects of various bilateral barter deals he made with various other down-and-out countries. There were quite a few of these, some of them for fairly large quantities of goods. The US Tarriff Commission published a couple of monographs on this topic not long before war broke out in Europe.
Just a couple of thoughts. K. Mickey