If this is not an issue of national security I don't know what is. The US needs to think long and hard about where it wants to invest to provide for the best future. More guns? More million dollar fighter jets? or more research to create new technologies and jobs. My vote is for more research. I am starting to compile a list of patent examples http://patentfile.org/provisional-patent-example-download and it's scary to see how little novel research is being conducted by US universities and organizations.
If an inventor has money to file a patent application in just one country, the U.S. is probably the country to select since it is a major market and has a strong legal system. As manufacturers and inventors see the global picture, it makes sense that U.S. filings would grow. What are the patterns elsewhere? How do patent filings in the UK or Japan compare by nationality?
Interesting to note that Foxconn filed more patents than Apple. I suppose most of the foxconn patents are process patents and as US has no manufacturing, I wonder why they filed in US. May be makes more sense to file the process patents in China/Taiwan.