While the stock market seems oblivious to the idea, the mounting debt burden of the U.S. shows some ominous signs. The credit default swaps indicate that U.S. Government debt is no longer the ultra-safe investment that it had been previously. In fact, the cost to buy credit default swaps for debt of the German government is now half the cost of that of the U.S. Government. This is significant, because interest rates must rise to compensate investors for the rising risk.