USD is not entering the cryptocurrency market. The US Dollar is controlled by the US Government, and they are in no way shape or form entering the cryptocurrency market. Someone just made a coin called BitUSD (and they are allowed to call that coin whatever the hell they want) but it does not mean that the US government endorses that coin. In fact, it is just another shitcoin altcoin that is just going to die soon because no gives a shit about it.
the shitcoin is bitshares in that case though.
but bitusd is just a gigantic joke... as i stated above: if bitshares price moves for more than 25% bitusd is automatically liquidated to bitshares...
and 25% volatility is easy... even bitcoin has this still from time to time