New York Times DealBook|Mary Jo White to Step Down as SEC Chief New York Times Mary Jo White, chairwoman of the Securities and Exchange Commission, appearing before a Senate committee in June. Credit Mark Wilson/Getty Images. Wall Street regulators began an exodus from Washington on Monday as Mary Jo White, the ... SEC chair to step down, clearing path for Trump to eliminate tough Wall Street regulations Washington Post White's SEC Tenure Hamstrung by Political Divisions Wall Street Journal SEC Chair Mary Jo White to step down USA TODAY Politico - Huffington Post - Business Insider - Bloomberg all 30 news articles »