Of course it will, economies run in cycles. They go up and down. Some of the ups are very up, some of the downs are very down. When the global economy improves so will ours. We are not an island untouched by the world.
Not until manufacturing comes back to the US. Look at the labels on your clothes and see what I mean. Go into any big box store and look at the "Made IN" note on just about everything sold, not just clothes. Buy American (if you can).