http://www.nytimes.com/2005/02/24/opinion/24friedman.html?hpExcerpt:
Ever talk to someone who trades currencies? "Orderly" is not always in the playbook. I make no predictions, but this could start to get very "disorderly." As a former Clinton Commerce Department official, David Rothkopf, notes, despite all the talk about Social Security, many Americans are not really depending on it alone for their retirement. What many Americans are counting on is having their homes retain and increase their value. And what's been fueling the home-building boom and bubble has been low interest rates for a long time. If you see a continuing slide of the dollar - some analysts believe it needs to fall another 20 percent before it stabilizes - you could see a substantial, and painful, rise in interest rates.
"Given the number of people who have refinanced their homes with floating-rate mortgages, the falling dollar is a kind of sword of Damocles, getting closer and closer to their heads," Mr. Rothkopf said. "And with any kind of sudden market disruption - caused by anything from a terror attack to signs that a big country has gotten queasy about buying dollars - the bubble could burst in a very unpleasant way."
Why is that sword getting closer? Because global markets are realizing that we have two major vulnerabilities that this administration doesn't want to address: We are importing too much oil, so the dollar's strength is being sapped as oil prices continue to rise. And we are importing too much capital, because we are saving too little and spending too much, as both a society and a government.
"When people ask what we are doing about these twin vulnerabilities, they have a hard time coming up with an answer," noted Robert Hormats, the vice chairman of Goldman Sachs International. "There is no energy policy and no real effort to reduce our voracious demand of foreign capital. The U.S. pulled in 80 percent of total world savings last year
." That's a big reason why some "43 percent of all U.S. Treasury bills, notes and bonds are now held by foreigners," Mr. Hormats said.
And the foreign holders of all those bonds are listening to our debate. They are listening to a country that is refusing to raise taxes, and an administration talking about borrowing an additional $2 trillion so Americans can invest some of their Social Security money in stocks. If that happened, it would almost certainly weaken the dollar, further depreciating the U.S. Treasury bonds held by all those foreigners.
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