Now Gscholz... just a few posts up you categorically state the US never gave military aid to Israel (which I knew was untrue)... a quick Google search proves that wrong. Don't go changing your tune.
Isolationism means looking out for #1 period. That means high tariffs, with would be economic suicide, but that's what it means. It means buying American products first. It means cutting off from the rest of the world as much as possible.
As for dealing with the British- that was largely Roosevelt's doing, but then, he wasn't an isolationist. He had to work long and hard to sell the idea to Americans. Most Americans of the time would have been content to let the rest of the world sort out its own trouble.
As for world relief, hey... we have plenty of poor here. Think of the good we could do for our OWN poor if we didn't concern ourselves with the WORLD'S poor. Think if we didn't pour billions into a worthless UN. Truthfully, a lot of good could come of it. You guys would have to find another country to hate, or you could continue to hate us, just without us paying you to do it.