We can’t wall ourselves off from the world without serious effects.
And modern world wars would engulf us even if we tried to opt out.
You let the enemy feed on the weak, and he is only stronger when he comes for you.
Isolationism is merely wishful thinking.
I disagree on the subject we are talking about. Isolationism has never been a policy of the US, and shouldn’t be. Then again, when we attempt to stave off every tin pot dictator, or wannabe Hitler before they blossom, we bankrupt ourselves, make our natural allies our enemies, then we are left broken and ready for conquest. We are currently nearing the time when we will not be able to fund the govt at all. How will that make US or the world safer? Soon the debt payments will be 50% of the budget.......not far off at all.