Prominent senators from both parties -- often-mentioned Democratic presidential prospect Elizabeth Warren and a potential new chairman of the Senator Banking Committee, Alabama’s Richard Shelby -- on Tuesday attacked the lack of criminal prosecutions for Wall Street wrongdoers.

Civil penalties don’t provide deterrence for the financial industry, Massachusetts Sen. Warren contended at a Banking Committee session.

Shelby said it “defies logic” that regulators can cite financial firms for “$35 billion” in fraud without pushing for criminal prosecutions for their executives.

With Congress on the verge of approving three-month budgets for federal agencies for the new fiscal year starting October 1 at the current year’s levels, Securities and Exchange Commission Mary Jo White pleaded for more funds, noting the number of investment advisor examiners for every trillion dollars of assets under management has declined from 19 to eight in a decade.

She added advisor assets have climbed 42 percent from $43.8 trillion in April 2011 to $62.3 trillion in August of this year.

The SEC head disclosed the agency will likely conclude its two years of private fund risk-focused reviews with exams of 380 of the 2,700 registered advisors by October. The advisors represent 8,000 hedge funds, 70 liquidity funds, and 7,000 private equity funds.

On another issue, White said she has no plans to have the SEC write rules requiring companies to disclose campaign contributions.

However, the SEC chairman said if a company's political spending is material, it would be required to be disclosed now.

In addition, she said bitcoin rules are not being developed because the commission staff has not determined the SEC can regulate them as securities.

At the same time, White said the SEC has issued two investor alerts on virtual currency.

The SEC chair told the Senate panel the commission expects to consider new executive compensation rules by the end of the year.

She said form letters are running rampant on Dodd-Frank-mandated proposed rules to give a ratio of CEO compensation to the median pay of all workers: 128,000 letters, only 1,000 are unique.