If you insist on a U.S. product look at the Snow & Nealy Penobscot Bay Kindling Axe. If you are willing to look at an import, the Swedish made, hand-forged Granfors Bruks Small Forest Axe is probably the best-of-breed, and priced accordingly. It's a very nice piece of equipment, with a 19" handle that's much safer and more useful than a small hatchet.
There is a "sticky" titled "Axes & Hatchets" or something similar on AR15.com, in the "Outdoors", "general discussion" forum, with links to a number of axe and hatchet manufacturers' sites. If you end up acquiring a Gransfors Bruks product, handle with extreme caution lest you damage other equipment or yourself. I immediately discarded the factory sheath and fashioned a more effective one of Kydex sheet.