Mika wrote, ''I am upset about China being the second highest holder of U.S. foreign
debt. Holding a country's debt is the most effective way to control its
actions."

China didn't/doesn't make the United States go around engaing in regime change (even of democratically elected governments) and support brutal dictators and kings. The United States is the number one seller of weapons in the world and it doesn't hesitate to sell weapons to opposite sides of conflicts.

Right before the United States invaded Iraq for a second time, Saddam Hussein (former U.S. puppet) had changed from U.S. dollars to euros. If China decides to reduce its holdings on U.S. debt, the United States would not invade a large country like China.

It would search for small weak countries where is could extract its natural resources.

Look at the Congo the Untied States sells weapons and trains solders of the opposite side of the civil war and while the people are killing each other, the U.S., Israel, and Europe benefit form the diamonds and other natural resources. The Congolese get paid slave wages to extract the natural resources.