U.S. President Barack Obama said Saturday Congress must work together to extend middle-class tax cuts and avoid the so-called fiscal cliff. "Four years after the worst economic crisis of our lifetimes, our economy is growing again and creating jobs. But we have much more to do. Our task now is to build on that progress. Because this nation only succeeds when we've got a growing, thriving middle class," Obama said in his weekly Internet and radio address.
