MINYANVILLE ORIGINAL US equities struggled to hold on to gains in mid-Wesnesday trading with continued fears over the looming fiscal cliff negating optimism over the likely announcement of more stimulatory measures from the Federal Reserve later in the day.   “We believe expanded Fed stimulus would do little to dramatically improve current employment or Main Street economic conditions but would provide a short-term boost to the stock and commodity markets as some of the Fed’s money flow would recycle back into ‘risk-based’ assets ” said Fred Dickson chief investment strategist at D.A. Davidson according to MarketWatch.   The Nasdaq ...