In a few minutes, President Obama will address the nation about the beheading of an American by the terrorist group ISIS. But before facing the cameras, Obama sent out a fundraising appeal. "Nothing has ever been more important than fighting for folks like you. You are my priority," writes Obama. "And right now, a focus of that fight has to be getting people who really care about making things better for you elected. The upcoming elections could determine whether or not we have a Congress who will work with me to help you. "That's why it's so important I spend...