So youre saying this 700bn is coming from overseas?
I know japanese banks etc are buying stakes in Goldman etc... but its not a loan and not a controlling majority.
Basically, it works like this:
When the government runs a budget deficit--spending more money than it's taking in through taxes and bonds--it needs to get that money from somewhere else. It can either print new money, causing some level of inflation depending on how much, or by borrowing money from other countries. When the U.S. borrows money from other countries, that lowers the demand for American dollars relative to other currencies. This shift in the relative demands is then reflected in the relative value of the currencies, which is exactly why the dollar has fallen so far over the past few years.
Now, how do foreign countries buy domestic goods? With domestic currency. Because a country in Europe can now get $1.50 with one euro instead of $0.90, they can get more dollars and hence buy more "stuff" in America, including American businesses.
That is the danger of having a falling dollar. When it weakens, we lose ability to buy foreign goods, and foreign countries gain ability to buy our stuff. You can blame going to war and cutting taxes simultaneously for that.
Though, I'm optimistic the dollar will pick up (it's already starting) and we'll start buying things back and buying stake in other countries again.