The global banking industry was thrown into turmoil on Thursday after President Barack Obama , responding to public rage over the financial crisis, proposed the most far-reaching overhaul of Wall Street since the 1930s. In reforms that could force the restructuring of some of the biggest names in US finance, including JPMorgan Chase and Goldman Sachs, Mr Obama promised that “never again will the American taxpayer be held hostage by a bank that is too big to fail”. Flanked by Paul Volcker, the former Federal Reserve chairman, who has advocated the move for months, Mr Obama called for banks to be banned from running their own trading desks and “owning, investing in or sponsoring” hedge funds and private equity groups.