President Obama, making his pitch to Floridians in a state where polls show him struggling, characterized the nation's problems this way: “This is a great country that had gotten a little soft, and we didn’t have that same competitive edge that we needed over the last couple of decades,” Obama told Payne. “We need to get back on track, but I still wouldn’t trade our position with any countries on Earth. We still have the best universities, best scientists and best workers in the world. We still have the most dynamic economic system in the world. So we just need...