All the identified candidates in the general election will have received an email from this organisation, whose aims are to inspire citizens around the world "to use their votes in a powerful new way to encourage governments to cooperate to solve global problems - problems like global warming, financial market regulation, environmental destruction, war, and social injustice. Cooperation among governments is essential because these problems cross national boundaries, and because competition to attract investment and jobs means that any government that moved first would make its economy uncompetitive, leading to inflation, unemployment, or even economic collapse. To solve global problems, governments must act together. If all governments act together, simultaneously, everyone wins. But while they fail to cooperate, it's the markets that continue to run politics - not we, the people."
It seems to me that this is just what the EU achieves for its member nations.