Europe is hitting the kills witch on some U.S. tech - Getty Images The nomination of Kevin Warsh to lead the Fed has taken the sails out of the idea that the U.S. dollar would sink. But Matthew Tuttle, chief executive of Tuttle Capital Management, thinks investors are missing the big issue regarding a shift away from U.S. assets. Most Read from MarketWatch In a note released Monday, Tuttle says most investors have explained the reason why international and emerging market equities have been outperformi ...