Should the EU evolve into the United States of Europe?

The United States of Europe is a speculative European Federation that unifies Europe as a single sovereign federation of states. The hypothetical unification would create a government similar to that of the United States of America. In the scenario each European county would become a state governed by a single federal government. Proponents, including the Belgian author Guy Verhofstadt, argue that such a federation would help stabilize the EU economy and save defense costs by consolidating each country’s military into one force which would serve all of Europe. Opponents argue that European voters would never approve the proposal since the popularity of the EU is at historic lows.