Out of curiosity, how deep was the damage the Germans deliberately did to the industrial and mining lands of Walloons and Lorraine? It seems that they should be given a bit of consideration, especially as it is likely they would have been kept up and running incase of German victory, instead of sabotaging them when they heard about peace coming up.
As for the United States in the League of Nations, it is likely enough if Wilson wasn't pig headed enough to refuse to let Congress keep their constitutional right to be the only ones who can declare war. The League certainly didn't back up the smaller members with their armies so it would have been unlikely they could be pushed if they were in anyways. Might have ended up with all of Anatolia being occupied by the US though.
As for the United States in the League of Nations, it is likely enough if Wilson wasn't pig headed enough to refuse to let Congress keep their constitutional right to be the only ones who can declare war. The League certainly didn't back up the smaller members with their armies so it would have been unlikely they could be pushed if they were in anyways. Might have ended up with all of Anatolia being occupied by the US though.