House, Senate sergeants-at-arms have also been ousted
                                
                                
                                    (Newser) -
                                    Three top security officials at the Capitol have resigned following widespread criticism of the  lack of preparedness  blamed for Wednesday's breach. Capitol Police Chief Steven Sund has resigned effective Jan. 16, meaning he will be gone before President-elect Joe Biden's inauguration,  Politico  reports. Michael Stenger, the Senate sergeant-at-arms,...