This is complex, imo. On the one hand, how can any caring people turn their head and ignore genocide and other awful actions, and pull back to a smaller set of the world. Borders are fake lines we have imposed on humanity, and I feel there is a sense of duty to help people, no matter where or who they are. OTOH, you can't fix everything, and indeed, trying to fix other peoples' problems often is not effective in the long run. Also, given our current interest in not paying taxes because they are somehow evil, we as a people need to make some difficult decisions. We cannot afford to fix everything. So, should we fix the worst parts, or the parts we can most likely fix? Should we ignore people in other parts of the world, and only work on fixing the US? I just don't think flip answers (which I specialize in) capture the difficulty and nuance of these decisions. I've spent some 40 years trying to answer these questions, and still don't know the answers.