[Sarge2]

Mini as in pistol grip type hand pump type? I assume you want manual hand type.. USA made might be difficult but I'd check with NAPA, Tractor Supply, or on line but I'd bet most are made in China or overseas somewhere..
Might also try Snap-on, Mac, Matco or other tool makers... most have trucks you'll see stopped at Auto repairs and dealerships for the techs there... they might have something USA made... Best I can do...