Big banks have begun to find ways to cope with Obama's new regulations proposed on Thursday to reduce proprietary trading at financial firms.

President Obama threatened to fight Wall Street banks to help stabilize the financial system.

We should no longer allow banks to stray too far from their central mission of serving their customers, Obama told reporters.

If these folks want a fight, it's a fight I'm ready to have, he said.

The new regulations said that no bank or financial institution that contains a bank will own, invest in or sponsor a hedge fund or a private equity fund, or proprietary trading operations unrelated to serving customers for its own profit.

However, the banks have dug holes on the key phrase operations unrelated to serving customers, according to the Business Insider.

Banks may plan to claim that much of their business is related in one way or another to serving customers.