Long is a tyrant sure, still the great majority of the us population remain isolationist and don't want to be involved in another european adventure; plus there is the general economic situation that i doubt is good as OTL.
So we a mixed situation; Long seem to sincerely dislike Hitler and can use the march to the european war as a mean to distract the people, still being involved too much can have repercussion (the USA seem not to be a totalitarian dictatorship...for now).
Another thing to take in consideration is that for now the USA don't have any mean to project power and influence in the old continent and of the three armed forces the Navy is the only one up to modern standard (but must divide his attention in two front and it will not that helpfull in any european conflict).
The only way of concrete help the USA can give now is starting the cash and carry politics (and allowing war material to be sold) and this can enbold both France and UK in a more aggressive stance (maybe a succesfull Saar Offensive?)
So we a mixed situation; Long seem to sincerely dislike Hitler and can use the march to the european war as a mean to distract the people, still being involved too much can have repercussion (the USA seem not to be a totalitarian dictatorship...for now).
Another thing to take in consideration is that for now the USA don't have any mean to project power and influence in the old continent and of the three armed forces the Navy is the only one up to modern standard (but must divide his attention in two front and it will not that helpfull in any european conflict).
The only way of concrete help the USA can give now is starting the cash and carry politics (and allowing war material to be sold) and this can enbold both France and UK in a more aggressive stance (maybe a succesfull Saar Offensive?)