Like most of the US, North Carolina is closer to Spain than to Argentina.
(Some southern locations of the US are closer to Argentina.)
Spain is closer to North Carolina than is Argentina. States farther to the south and southwest are closer to Argentina.
If you could find a way to put North Carolina into northern Argentina, it would be closer to the equator there than it would be if it were in southern Spain.
All of the US state of Virginia (and North Carolina as well) is closer to Spain than to northern Argentina.However, states to the south (such as Texas, Mississippi, Florida) are closer to Argentina.
The closest locations to Argentina in North America (even excluding Central America) are much closer than the points in North America (eastern Canada) that are closest to Spain. Mexico and the southern US are closer to Argentina than to Spain. The northern US and Canada are closer to Spain.
It's possible to get closer to the equator by going north through Argentina than by going south through Spain, but I am not in either of those places.
Iowa and the Midwest are closer to Spain than to Argentina. The SW and southern states are closer to Argentina.
Montana and the northwest US are closer to Spain than to Argentina. Southern and southwestern states are closer to Argentina.
In Argentina, you closer to northern than to Spain in southern.
Mexico and the SW and southern parts of the US (Nevada, Texas, Florida) are closer to northern Argentina than they are to Spain. The rest of the US and Canada are closer to Spain. There are some points in the US where Argentina and Spain are equally distant, one example being southern Colorado south of Denver.
Like most of the US, Illinois is closer to Spain than to Argentina.(Some southern locations of the US are closer to Argentina.)
Like most of the US, Wisconsin is closer to Spain than to Argentina.(Some southern locations of the US are closer to Argentina.)
Like most of the US, Connecticut is closer to Spain than to Argentina.(Some southern locations of the US are closer to Argentina.)