When Wells Fargo was hit last week with $185 million in fines after thousands of its employees were caught setting up fake accounts customers didn't ask for, regulators heralded the settlement as a breakthrough. But the fines being levied against Wells Fargo pale in comparison to the bank's yearly profit - more than $20 billion in 2015. It is also less than the more than $200 million that the stock in the company held by company's chief executive, John G. Stumpf is worth. The fines also are not that much more than the $125 million one of its top executives, Carrie Tolstedt, will walk away with when she retires this year. There are two possibilities: Customer abuse was part of business model, in which case lots of high ranking people need to go to prison," said Bart Naylor, a financial policy advocate. "Or the bank is too big to manage, and folks high up don't even know that laws are being broken a few levels down." The magnitude of the fraud described by regulators should be thoroughly investigated, five Democratic lawmakers said in a letter to the head of the Senate Banking Committee, Richard Shelby (R-Ala.), asking for a hearing on the case. The lawmakers, including Sen. Robert Menendez of New Jersey, said Wells Fargo's CEO, John G. Stumpf, should be called to testify. "It is difficult to believe a large-scale, coordinated [scheme] like this took place without knowledge of some higher ups," Menendez said in an interview.