It’s not just the USA that allows bankers and financiers to break the law and get away with it. Or regards the largest financial institutions as “too big to fail”.
This goes back to Prime Minister Tony Blair, who thought he could make London the world’s financial hub by freeing banks from all regulation.
As in the USA, the government’s priority is to protect the financial institutions rather than to protect the public.
Banking regulation is even weaker in Europe than in the United States, and one of the goals of the proposed Transatlantic Trade and Investment Partnership, the next international agreement in the pipeline after the Trans Pacific Partnership, is to set limits on financial regulation.
That would make banking and finance un-reformable, either in the USA, the UK or other TTIP signatories.
Update 5/22/2015. The five banks that pleaded guilty to rigging interest rates and the exchange rate for foreign currencies are Britain’s Barclays and the Royal Bank of Scotland, the USA’s Citicorp and JP Morgan Chase and Switzerland’s UBS.