Who thinks there will be a major correction. The U.S market is being proped up by free money at 0% interest, that is being pumped into an economy that has zero house growth and their manufacturing is competing against China. The U.S stock market has gone up 100% since the GFC but their currency has dropped heaps. The U.S dollar is the underpinning currency i.e they have to stop printing it eventually or people will lose confidence in it. Then the free money won't be pumping up ailing companies.
When this happens the correction has to happen, otherwise mahem happens with currencies. I am no economist, but you just can't keep printing money or why am I going to work?