Plug Power (NASDAQ:PLUG) shares have bounced back lately. That may seem like a sign that Plug Power stock is coming back, but I wouldn’t jump to that conclusion. The reasons for this are manifold.For one, the driver of this recent rally is not much of a game changer. The various factors that knocked this hydrogen energy play lower previously have not gone away. To make matters worse, there could be political risks emerging for this stock, which took shortly after the last U.S. Presidential election, but cou ...