The Halo is a great unit for sure and is American made. However, getting a focus adjustable, 640 resolution clip on with a 1280 HD display..... you won't find a unit like it for under 24k.
If there was an American equivalent, even for 3x the price, I would have went with that unit. The closest is the TigIR from Andres Industries (which I have) but even that lacks a manual focus (which really limits the capabilities with long range engagements...and makes me sad) The simple fact is, there is nothing, not a single unit, that comes close to the Super Yoter being produced in the US for the consumer market at the current moment. American manufacturers really need to recognize this and address it accordingly, or they will continue to lose out to the likes of China. This is a fact.