It's a problem, but there is no easy fix because we need to fix not only the economy but our mindset.
We could immediately enact protectionist policy such as tariffs or removing favored nation status with China. We could begin mass deportation of illegal immigrants. The immediate effects of those actions would be lowered lifestyle for Americans. The price of everything would go up. Over time it would bring jobs back to the US, but even after that occurred, prices would remain at those levels, and so the average worker wouldn't be able to afford more STUFF than they do right now.
I support this. For many Americans, its not about STUFF, its about being able to afford food, shelter, medical care, and paying debt. None of these are really related to Chinese made stuff. All of these require a job and if that job is in a newly competitive American manufacturing industry, then so be it.
It's really two choices:
1. More expensive stuff, more decent paying jobs, and less people on Government assistance.
2. Cheaper stuff, fewer jobs, and more people on the assistance.
We prospered over the last several decades at the expense of long term viability. Our lifestyle will have to regress several decades to match. People like to point to Europe, but Europeans don't have nearly as much STUFF as Americans do. Dwellings are smaller, they use more public transportation or bicycles. American has an infatuation with STUFF that will have to be changed.
This is another opportunity. Massive public works projects, such as new public transportation lines, would provide tremendous stimulus. Make the trains in the U.S. and we'd be in great shape.
Europeans have less stuff, but they have longer vacations, have funds for travel, and better health care systems. This is a difference in priorities and values more than anything.
In addition, the end game of an economy is a 100% service economy. The whole idea behind manufacturing technology is that nobody actually needs to make anything anymore. Everything is done by robots. You'll need a few people to design, build and maintain the robots, and eventually you don't even need that. With advanced enough technology (50 years from now? 100?) the physical goods for an entire nation could be produced by a minute percentage of the population. Unless you're a Luddite and plan to smash all the robots, we will simply replace offshored labor with onshored technology. So the question then becomes, how do we transition to a nearly fully service economy? What jobs can people do? People in this forum talk down about service jobs, but that's all that's going to be left eventually. Technology ensures it.
At that point, we'll have to rethink our whole economy.