Tired and ready for a change, Mary Schapiro, head of the Securities and Exchange Commission, is expected to step down from her position on Monday, two White House officials said. The 57-year-old top regulator was nominated by President Obama in 2008 and immediately had to deal with the financial crisis and the Bernie Madoff scandal. Schapiro worked to bring back an agency that had been condemned for allowing banks like Lehman Brothers to bring the country close to a second Great Depression. Critics say she did not do enough, however, to take Wall Street to task.
