Ed Miliband has suggested that bankers should have a 'code of conduct' and should face being struck off if they break the rules.
He has also pointed out that the annual budget of the Serious Fraud Office is currently one tenth of the amount Barclays paid in fines for rigging the Libor rate.
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Addressing an audience in America, the former PM said of Europe's single currency that it was not working "as intended".
The countries lawmakers voted to impeach President Park Geun-hye in the wake of mass protests against her.
The former presidential candidate, who has herself been the target of false news reports, said such stories had 'real-world consequences'.