Some libertarians argue that moral responsibility does not extend beyond national borders, and so there is no moral obligation to aid people in the developing world.

Some libertarians believe in the principle of non-aggression, which means that individuals should not use force or coercion against others. This principle is typically applied to interactions within a nation, and some libertarians argue that it does not extend to interactions between nations. Therefore, they may argue that there is no moral obligation to provide aid to people in developing nations, as it would require the use of force (such as taxation) to redistribute resources. However, not all libertarians hold this view, and there is ongoing debate within the libertarian community about the extent of moral responsibility towards those beyond national borders.