It’s easier for the US….Their political battles are mostly internal squabbles over the route of the gravy train.
In Europe things are much more complicated. I’m sure they want to do what is best for Europe as a whole (if only to make the problems go away), but are always drawn back to their domestic imperatives.
They cannot admit defeat over the `Europe problem`, but cannot afford to make the sacrifices necessary to move toward solving it.
The European Union is `home` to 330 million people.