It can be done in the U.S. just as well.
But how long will it take for that to start happening?
Cryo refrigeration technology is not rocket science - well, not entirely. Think of liquified NG, Nitrogen, Oxygen, etc. The technology is common and in use across the U.S. The extraction process for neon is what might take some time and investment - but I could be wrong. It might be no big deal to accomplish.. I think the only reason it has not is simply a matter of where to get the mostest for the leastest - in this case, that was Ukraine, since they probably have much lower labor / production costs.