Obama's OMB Pick Lew Headed Citi Unit That Shorted HousingJul 15 2010, 3:40 PM ET Imagine if President Obama's new OMB head had worked at one of the biggest Wall Street bailout recipients and headed a group that profited by shorting the housing market. That would be a public relations nightmare, but it also appears to be the reality the administration faces with the Jacob Lew nomination. His Citigroup unit had a big investment in the hedge fund run by John Paulson, also at the center of the SEC's Goldman Sachs lawsuit. The hedge fund made billions of dollars by...