But these productivity gains only come about if the investments are placed into service exclusively inside the US. If not, then you're essentially funding the decline of your own economy by financing the competitiveness of foreign companies.
It's pretty obvious that you couldn't possibly restrict a private SS account to purely US financial interests so how exactly do you implement private accounts without making the US even less competitive than it already is? Seems to me that your argument for productivity advances is totally backwards.
Originally Posted by Mazomaniac
Not necessarily. A well diversified investment account typically has about 10% invested overseas. Its about diversification of risk, efficient frontiers and other modern portfolio theory stuff. Due to differences in the covariance of risk, it produces a higher expected return at lower risk. But if people all over the world are pursuing similar rational investment strategies, its is a wash. they are investing as much in you as you are in them.
Besides, what differences does it make where the money is invested? If you carried that argument to its logical conclusion, people in Texas would only invest in Texas, and people in Dallas Texas would only invest in Dallas, and people in Highland Park Dallas, would only invest in Highland Park, and people on Mockingbird Lane would only invest on Mockingbird Lane. the bottom line is we don't need that many lemonade stands, which is about all you would have to invest in.
But your biggest fallacy is the idea that foreign trade is a zero sum game. Read up on
Comparative Advantage