JULIE HIRSCHFELD DAVIS, MICHAEL S. SCHMIDT

FILE – This April 25, 2011, file photo, President Barack Obama points to the crowd as he attends the performance of Willow Smith during Easter Egg Roll festivities at the White House in Washington. Mark Connolly, the second-in-command on President Barack Obama’s security detail walks behind the president at left. The Homeland Security Department is investigating two senior Secret Service agents accused of crashing a car into a White House security barrier, an agency spokesman says. (AP Photo/Carolyn Kaster, File)

Top Secret Service agents under investigation

The inspector general for the Department of Homeland Security is investigating the March 4 episode, which involved Mark Connolly, the second-in-command on President Obama’s personal...