National Economic Council Director Gary Cohn said Monday that tax reform has to happen this year, even if it means Congress has to stay in session longer. "I think we have a unique window in time right now, but unfortunately we keep losing days to this window,” he said. “The opportunity is now." House Speaker Paul Ryan said last week he’d keep members over Christmas if that’s what it takes. And Ryan predicted Monday that tax reform would pass the House by early next month and then get through the Senate to reach the president’s desk by the end of the year. But there are plenty of skeptics out there, given the hurdles. Issac Boltansky, an analyst at the investment bank Compass Point, told Business Insider, "The idea of getting tax reform done this year is a farcical fantasy. Lawmakers have neither the time nor the capacity to formulate and clear a tax reform package in 2017."