EU countries must back plans that would strip them of their powers to police stock exchanges and other key institutions if they are serious about building a U.S.-style financial market, the EU’s finance chief told POLITICO. “If we don’t do anything different from the past, we will hardly get to any different result,” Financial Services Commissioner Maria Luís Albuquerque told POLITICO in an interview. “So if there is support, well, let’s walk the talk then.” The Portuguese commissioner's