If you were setting out to provoke the scandal machine that has bedeviled every recent second-term president, having the IRS conduct audits using such key words as “Tea Party” and “We the People” is sure to get it going. The revelations about the IRS, coming on the heels of the controversy over Benghazi, has Republicans and some Democrats asking those familiar questions, what did the president know and when did he know it? The media see blood in the water, another phrase that conjures up Watergate, the scandal that forced President Nixon’s resignation and is remembered in Washington as a high point for American journalism.