China & Iran Cause Worries

According to this. The money quote:

Investors have also seen an unusually fast decline into disarray and outright incompetence by the new Democrat-led Congress. After years of criticizing President Bush, the Democrats have displayed a frightening lack of concern for America's security — reminding everyone they're still the party of Jimmy Carter.

So Iran, China, global security, stupid Democrats, debt, potential recession, and everything Mama talks about all the time and I still don't understand, combine to make investors nervous.