That's an incredibly dehumanising way of viewing the world. A view I guess is shared by the ones who conducts your tortures and carries out your murders. Shame on you.
Right, that's basically saying that the US should care about other countries' citizens, not that they should care more about other countries' citizens.
I guess we just disagree on what that sentence is saying then. To me it says not that the US should care about non-citizens, but that, as a baseline, it cares about its own citizens more than it does about non-citizens.
Many Americans did not choose their burden and instead were born into it. Shame should be placed somewhere, but I think this person's got nothing to do with it.