The U.S. economy is one of the most stable in the world, and certainly the most stable of any major world power. In fact, many economies are directly tied to t

The U.S. economy is one of the most stable in the world, and certainly the most stable of any major world power. In fact, many economies are directly tied to the value of the dollar directly or indirectly. A lot of foreign investors are simply trying to put their money in US assets. Most conservatively in treasuries, least conservatively in the stock market. Housing falls somewhere in between. To these investors, the fundamentals of the housing market don't apply as rigidly.