I find the argument that we only have a responsibility to take care of our own citizens tenuous at best. Generally, it is based on the concept that nationals of a country have built a society that is somehow separate and distinct from the rest of the world. My feeling is that the world economy and trade, including both production and consumption, has permeated borders to the extent that we are all completely intertwined. This connectedness is most visible when inspecting the country of origin of one’s clothes or observing what is advertised and ingested in locations most distant.