As far as time... I don't know what it is you're expecting to see undone, Kukri. If you're talking about "when is the U.S. going to look just like it did before Dubya touched it", who knows.
Please, give a tiny bit more credit than that. September 11th happened, and it changed everything. Even if we don't understand the depth or all the nuances of that change, yet.

To see 'undone': Guantanamo, extraordinary renditions, torture, pre-emptive military strikes to potential threats... for a start. He could undo all that with a single stroke of his Executive Order pen on his first day in office. Will he? If so, then I'd feel like we stood some chance of also fixing the measures that will require Congressional cooperation. FISA, Patriot Act, etc.