China and US bonds
From Kevin Drum in Mother Jones:
This claim that China will be able to blackmail or extort America because of all the U.S. debt it owns is a zombie idea that just won't die. The truth is that China's holdings of U.S. treasuries give it no leverage to speak of; pose no danger to America; and China's recent actions demonstrate pretty conclusively that they know this perfectly well. Hell, China's share of U.S. debt has gone down for the past two years. This whole meme really needs to die.