WASHINGTON – Mary Jo White is vowing to make “bold and unrelenting” enforcement of Wall Street a high priority if she is confirmed chairman of the Securities and Exchange Commission.

White, a former prosecutor, says investors need to know the playing field is level and that wrongdoers will be “aggressively and successfully” pursued.

She made the remarks in prepared testimony to the Senate Banking Committee, which is considering her nomination Tuesday.

White, 65, is expected to win confirmation from the panel and the full Senate. She would step into the job at a critical moment. Critics have complained that the SEC has failed to act aggressively to charge top executives at the biggest U.S. banks who may have contributed to the 2008 financial crisis.