They can't go to any of these places?
You know each of those exact places is probably asking the same question as this
"why don't they go to america? america's the biggest country ever!"
"why can't they just go to russia after all there's plenty of room there"
"sorry we dont want you here go to sweden"
"sorry guys you're causing 1% of the crime here, we can't have that. go to america"
America has a long history of avoiding as much humanitarian aid as possible and letting the poorest and least-equipped countries tackle that, despite being one of the richest countries in the world with some of the highest standards of living.