European Union = Next United States?

After checking out this Libson treaty, it seems like the EU is going to become one major country. Their form of government seems to be a bit similar to the American government. Probably not that close since our US government is fucking weird, but close enough.

Ireland just passed their support for the treaty. What does Europe becoming on country mean for the rest of the world?

It means they'll bicker even more than they do already, the federal government will be as corrupt as the UN, they'll employ protectionism to increase the profit of particular parts of the union...

It's just not a workable solution. Hell, the USA are barely holding together right now. Ditto for Canada.