OTCBB stocks have trading halted numerous times. Usually, the stock is associated with fraudulent activity. If RHWC trading had been halted by the SEC, there would be a notice about it.
My guess is that most RHWC trading is done amongst the MM's. There may be a few shares picked up here and there by smalltime individual investors such as ourselves, but the MM's are probably doing most of the trading with this stock.
As to having no more available shares to short...the MM's can always find ways to short shares. Naked shorting, shorting unregistered shares, you name it and they have probably done it.
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