comment: The single currency and economic integration are not issues, they're tradeoffs. You give up one thing and gain another, in this case: higher growth and more comfort for the people.
  
  Southern countries held to harsher standards. 
  
  What harsher standards are asked of southern countries that northern countries don't meet?
  
  Racist immigration policy (favouring uneducated europeans over skilled foreigners)
  
  A zone where everyone living in it can move where they want is now... racist? Because it's not worldwide?
  
  Uneven movement of people, assets and capital
  
  Please explain the actual problem you see.
  
  Trade diversion and over specialisation (so more vulnerable crises etc) 
  
  Please definitely elaborate, because I have no idea what you're trying to say.
  As for the democratic deficit, I see it mentioned all the time.