Barr Authorizes Probes Into Voter Fraud, Trump Fires Esper, ACA Before Supreme Court : Up First There's still no evidence of widespread voter fraud in this year's presidential election, but Attorney General William Barr has told prosecutors they're free to look for it. The DOJ's top election crimes official responded by quitting in protest. In a tweet, President Trump wrote that Defense Secretary Mark Esper has been "terminated." How will the president's actions affect national security? And the Supreme Court on Tuesday will hear arguments in a bid to overturn the Affordable Care Act.