Perhaps someone who knows more about Switzerland and their various trade relationships with other countries could shed light on this, but I'm thinking that Swiss-style neutrality for the USA would be impractical unless the USA becomes more or less completely self-sufficient with regards to producing everything we need here at home. As it stands now, much of our manufacturing is done in otehr countries, and a good portion of our energy (oil) comes from abroad - the latter of which is a big reason for our entanglements in the Middle East in the past 60 years.

 

Swiss neutrality was ensured because, as others have mentioned, it is an extremely mountainous region with a heavily armed national militia. Moreover, what natural resources does Switzerland have that other countries covet? Belgium sought to maintain neutrality prior to both World Wars, but they unfortunately occupy a flat, easily penetrated geographic region which happens to be sandwiched between two larger, belligerent countries. If say - Italy and Germany were the two main antagonists of the 19th century leading up to WW1, and if Switzerland was only as mountainous as say - Luxembourg, then perhaps Switzerland would have suffered the kind of fate that Belgium did.

Switzerland was born in war and expanded through war of course.

 

Switzerland became famous in some respects by having farmers who were willing to contract out as soldiers for foreign exchange in between fall harvest and spring planting.

 

Switzerland's main sources of income have shifted over the centuries. But Switzerland isn't self contained economically. So neither would, I believe, the US need to be in order to be neutral.

 

The whole thought I have about it is that the US's strong suite in the early 20th century was business more than war. By promoting, as much as possible, peaceable relations among nations and doing it particularly by example, world economic progress could have fared better.

By the way, if the Allies had pushed the Germans back to the Swiss border, would the Swiss have joined with the Germans and foought against the Allies?

That happened in August September 1944.  Gen Dever Army Group of the 1st French Army  US 7th Army chased the Germans out of southern France.  The Swiss posted some extra border guards and took some German stragglers into custody.  They also established liasion with the Allied armys to resolve problems, like drunken soldiers wandering onto the border.

 

As the war ran out diplomatic persuasion from the Allied governments caused the Swiss to reduce cooperation and trade with Germany, tho neither was completely halted.