That the Courts and Congress can restore the traditional American value known as Due Process.
Due Process is what separates tyranny from justice. If a Government cannot be held accountable to its founding principals by its people, how is it different than a fascist dictatorship?
It dismays me to see the way that some Americans were (and some such as Newt Gingrich still are) so easily frightened by the events of September 11, 2001, that they were ready to abandon the Constitution and basic human decency. Frankly, they should be ashamed of themselves.
America has faced far more formidable enemies than Al Queda: specifically, the Soviet Union, Nazi Germany, and even Sen. Joseph McCarthy. Those enemies were not defeated by throwing away the Constitution or our nation's principals. To the contrary, it was our Constitution and our principals that kept this nation strong and allowed us to prevail.