In August 2011, the rating agency Standard & Poor's stripped the U.S. government of its prized AAA bond rating because it feared that America's dysfunctional political system couldn't deliver credible plans to reduce the federal government's debt. S&P decried American "political brinksmanship" and concluded that "the differences between political parties have proven to be extraordinarily difficult to bridge."
A year and a half later, the two political parties are still as deadlocked as ever.
Despite S&P's warnings and the political stalemate, investors still want U.S. Treasurys. Given economic turmoil in Europe and uncertainty elsewhere, U.S. government debt and U.S. dollars look like the safest bet around.
That is why the interest rate, or yield, on 10-year Treasury notes has fallen from 2.58 percent on Aug. 5, 2011 to 1.75 percent Wednesday.