US debt != US govt. debt. The bubble started sometime in the 1980s when it became clear that the US was unlikely to ever run a trade surplus. Its been inflatin

US debt != US govt. debt. The bubble started sometime in the 1980s when it became clear that the US was unlikely to ever run a trade surplus. Its been inflating ever since. Also, bonds are just a proxy for cash. There is effectively no difference except the bonds get interest. Banks are not an option because any cash over $250,000 will have little guarantee. If China ever wanted to purchase US companies, the US govt. securities market would be more than happy to exchange the bonds for hard cash. Also, why would the chinese avoid buying US companies once their economy stabilizes and goes down from the double digit growth? They will buy whatever is most efficient and with their abundance of capital, that may be mean greater investment in American and European stock-markets. Also, being able to print more money does not make an investment safe. It makes it crap. Read the last sentence you wrote. The key phrase is "devalue the dollar." What exactly is a devalued dollar worth? you tell me but it's not much and it's certainly low enough to wipe out the investment. US bonds are a safe place keep capital because the US government has a reputation of maintaining currency values and honoring debt. A reputation that is more and more divorced from reality as time goes on. Remember something: money != wealth. Also the Chinese government has a few 100 billion (which by the way is not an insignificant amount, have you ever had even a billion to spend? I wish I did.). The Chinese public also has a lot of capital floating around and when considering the country, that capital must be counted.