"The problem remains one of a contaminated beeswax supply."
You may need to import wax from Australia. Very few chemicals are permitted here in Beekeping. We have no Varroa ( so far!) and thus the need to use chemicals is much reduced.
I don't produce a lot of wax and have all of it processed into foundations but there is wax for sale from time to time. I know that we can export honey ( and bees!) to the US but I'm not sure about wax.