That sort of happened with the first 13 States anyway. We used to be a loose Confederation in our early years until we got our current constitution. That's why we have such an awkward name (United States of America) "America" isn't actually the name of our country,it's the name of the entire western hemisphere.(North,Central,and South America) So Canada,Mexico,Chile,Brazil etc. are all in America.
Yeah I know America is the name of the continent. But you call yourselves Americans more often than not Canadians are also Americans but they call themselves Canadians Didn't someone come up with the idea of calling yourselves USians? :1orglaugh Daft idea.