You're right to an extent, but there's some difference to it. Isolationism wasn't something poor xenophobes held, it was something people like Joe Kennedy held firmly to and that's 20 years after WW1 when the US went all out in getting involved in the global order.
Someone like Trump might talk some isolationist talk because it wins votes, but do you think those people who make hundreds of millions projecting American power really want that to stop? Not many people thought Brexit would happen, though, so maybe...
Someone like Trump might talk some isolationist talk because it wins votes, but do you think those people who make hundreds of millions projecting American power really want that to stop? Not many people thought Brexit would happen, though, so maybe...