I'm inclined to believe there's a bit of advertising "slight of hand" going on with the Drill Hog brand. Only 3 of their many sets of drills are themselves actually advertised as "Made in the USA". 2 others say "drill index Made in America". Many others have the Made in USA label on the Huot box, but don't actually say the drills are made in the USA. Others just tout the company's name is Drill Hog USA.
I believe if all the drills themselves were made in the USA
ALL the advertisings would say so. It's kind of like the Apple phones, computers, watches, etc. that all proudly say "Designed and Engineered in the USA". In much smaller letters somewhere on the packaging it actually states "manufactured in China".
Here are a couple excerpts from an article about the Drill Hog company:
"Drill Hog is a brand name of “Canary Island Corporation”, incorporated in Nevada, registered in California and operating in California."
"The business is a “manufacturers representative”, which means that Mr. Russell probably purchases these drills from the actual manufacturer for resale. There is some left-over web presence of what appear to be two previous businesses of Mr. Russell: Something called “tarpsdirect”, and toolprice.com which sold Harbor Freight style merchandise. "
Here's a link to the article: