> isnt the eu basically a less federalist version of the usa?

And what good does it do? The EU cannot speak in a single voice - there is no foreign minister, no defense minister, no whatever minister.

Like the EU foreign function: you have a person claiming to be the EU voice, and then you have the foreign ministers of every EU member that can just say whatever they want if what the EU voice says is contrary to their political game in their own country. Same for the other functions.

Being less federalist is not better, it is worse. The EU does not speak in a single voice in any domain.