The biggest threat to America are myopic people like you. Losing our industrial base to save few pennies on the dollar has to go down as one of the stupidest things ever done. See we could survive the coming economic collapse if we still HAD an industrial base. We could actually win another world war. BUT FREE TRAITORS have off shored out prosperity and security.
In what universe? Marx was for central economic planning - the exact opposite of free trade.
If you go back through history, you'll find that trade always grows in a low-to-high scenario, where things are produced where the costs are lowest and consumed by those with the strongest purchasing power. This is true regardless of whether you're dealing with products or services -- which is why multi-millionaires don't work as landscapers, and Mexicans do landscaping work in the U.S. but not in Mexico. As time goes on, the nation, region or person with the highest standard of living has an increasingly difficult time being competitive with other nations, regions, and people.
It's a complicated issue that will never be "solved," but I'd make the case that advances in other areas -- like the advent of containerized shipping and the growth of global telecommunications networks -- has had a far bigger impact on changes in trade patterns over the last 50 years than most people realize.