Here's the thing with made in USA that I have noticed with tools: They are best at making simple, tough professional grade tools that usually do not have the best finishing. Estwing hammers, Sand's levels, Mayhew prybars and chisels. Tools that are simple and durable enough to survive on a job site.
Starrett and Snap-on excluded of course.
I think the lack of finshing is because of the price of human labour in the USA. QC might slip a little but and some casting flash/imperfections might be overlooked. I think that is what happened here, I see it all the time on US made tools.