That you say this implies something about that which you are opposing, that the people who say they're America First think that they value non-Americans as "lesser". And when they say America First, that implies something as well, that they put America and Americans ahead of everyone else. But you use words like "value" and "lesser", which may not be an accurate representation of the people you oppose.
Is it the case that GPS coordinates are the thing that makes America first to them? I'd say it's the citizenship belonging to the sovereignty of the US that makes the difference, and not the GPS coordinates. GPS only matters to the extent that it is the homeland in which the US is sovereign. Our government is responsible first to its own citizens.
To me--and I'm not saying that my own worldview is fully representative of the people you disagree with--humans are of equal value but a higher priority is owed to one's own nation. The social contract is with OUR government, for all of its people. It's not that those people are lesser. Mexico has a responsibility to Mexicans, Canada to Canadians, Japan to Japanese, Russia, Honduras, Israel, Greenland. They are sovereign nations who are beholding to their own citizens.
A nationalistic sense can go too far such that maybe Japanese start to feel a superiority over other nations. Or Americans can. Or even Mexicans can. But that's an issue of individual people and even cultures, and not the just belonging that accompanies citizenship. The language you used implies that you think they're the same.
