The euro brought to fruition the idea of ever-closer union, a plan that dates back to the early 1950s. Lots of things considered good ideas back then are no longer considered quite so clever: system-built high-rise flats as the answer to slum housing; nuclear power to meet energy needs. Put ever-closer union in the same category as the Birmingham inner-city ring road: it seemed a good idea at the time.
A different Europe is needed, but it is stretching credibility to imagine that the Europe of Greece and the Transatlantic Trade and Investment Partnership can easily morph into America with the nice people in charge. The eurozone is economically moribund, persists with policies that have demonstrably failed, is indifferent to democracy, is run by and for a small, self-perpetuating elite, and is slowing dying. The wrong comparison is being made. This is not the US without the electric chair; it is the USSR without the gulag.