WASHINGTON -- The Securities and Exchange Commission has brought civil fraud charges against six former top executives at Fannie Mae and Freddie Mac, saying they misled the government and taxpayers about risky subprime mortgages the mortgage giants held during the housing bust. Those charged include the agencies' two former CEOs, Fannie's Daniel Mudd and Freddie's Richard Syron. They are the highest-profile individuals to be charged in connection with the 2008 financial crisis. Mudd, 53, and Syron, 68, led the mortgage giants when the housing bubble burst in late 2006 and 2007. The four other top executives also worked for the...