The important results would be the same.

Can you promise that the Republicans won't make it to power the next 20 years? Not to speak about the past didn't endanger a repeat of the past in Germany or Spain, at least after the tried coup failed. The problem in case of the US that there is no break. There is no change from a despotic to a democratic gov't. There is no external pressure, there is just a democratic election and a couple of percent of people who decided different than a couple of years ago. The US remains with the mighties military in the world and the warmongers remain in armslength of power. Wasn't there lots of talk, that, if there is a prolonged recession Obama will be a one-termer?

As well dodo's description the description of the German treatment of its history in the Adenauer era and after.
Some facts (I think you can read German as well):
"Am 26. November 1949 stellte Bundespräsident Theodor Heuss den Juden finanzielle Entschädigungen in Aussicht. Der Bundeskanzler bekannte sich am 27. September 1951 vor dem Bundestag feierlich zur Wiedergutmachung. Die israelische Regierung forderte die deutschen Staaten auf, Beihilfen für die Ansiedelung jüdischer Emigranten in Israel zu zahlen (Noten vom 12. März und vom 30. November 1951). Während die Deutsche Demokratische Republik jegliche Kontinuität zwischen dem Deutschen Reich und ihrer eigenen Existenz leugnete, begannen Beauftragte Israels und der Bundesrepublik Deutschland am 21. März 1952 in Den Haag, über Wiedergutmachungsleistungen zu verhandeln."
[...]
"Am 10. September 1952 unterzeichneten Konrad Adenauer und der israelische Außenminister Moshe Sharett in Luxemburg ein Abkommen über deutsche Wiedergutmachungsleistungen, in das auch die "Jewish Material Claims Conference against Germany" - die Interessenvertretung der nicht in Israel lebenden Juden - mit einbezogen wurde. Der Bundestag in Bonn ratifizierte den Vertrag am 4. März 1953."

And there were strong attempts to reconciliate with France. Among other things the foundations for the EU were laid down by the treaties of Rome. As well the Élysée treaty was signed, that ulltimately kicked off e.g. things like town twinnings and pupil exchanges. This is not the same as reparation, but for sure it is atonement in the sense of at-one-ment - healing the insuries of the history between these two countries. For me one of the most remarkable social processes in history.

There were no serious attempts eastwards in the Adenauer era. That came only later. But it made it NEVER really to the mainstream, but remains an elite project. A real reconcilliation with e.g. Poland or Czech Republic hasn't happen really so far. The remembrance of the suffering of the victims of WW II is totally overshadowed to the insignificance by the remembrance of the Holocaust. The conspicion with which e.g. many Poles look on the Germans with regard to interpretation of the common history is quite justified. Not that many Germans dispute the facts, but the acknowledgment of the suffering is inadequate in the German Polish relationship.

The 68 generation was completely ineffective and useless for coming to terms with the past. I don't follow the narrative, that they would have brought magnificent change. The reason the DDR could argue, there was no line of continuation between Nazi Germany and them, was, that they radically cleaned almost all public positions from them, while in West Germany indeed no serious attempt was made to try Nazis legally. The 68 generation has not at all hard pressed to change that and focused strongly on the Holocaust. They have collectively condammend the parential generation and thereby intensified the way that was gone in West Germany. Collectively the country has already before acknowledged its responsibility. The individuals, who had personal responsibility still could hide in the collective, even easier, and excuse themselves with a 'but everybody took part in it', which is simply wrong. Essentially this hasn't changed as well until today, except in really extreme cases. There is no interest in studying refusal and opposition to the Nazis, which would reveal, that those who were part of the system really had a chance to say no, without being some quasi-holy heros.

Back to the US today; not everybody who voted Republican or got his position under a Republican administration should be removed. But a couple of decisive individuals should be tried legally, to make clear that such decisions have consequences. More is anyhow impossible, because essentially every senator and congressperson, that didn't try to impeach, that voted for the war in Iraq, that stayed calm, when there was a debate if waterboarding is torture is in a sense part of the system. But that are the people, that are needed now to repair the system.

Gemach, gemach