GUE/NGL MEPs have voiced their concerns about the EU's future banking union architecture in a plenary debate on the issue.
GUE/NGL MEP Jürgen Klute said: "An internal market must go hand in hand with banking supervision rules but these must apply across the board, not just in eurozone countries."
He continued: "There is a concentration of power that is difficult to accept in the ECB. It is not acceptable that the ECB refuses any kind of democratic accountability, particularly on the banking supervision part of its work."