Trump and GOP test precedent with aggressive voter roll purges

The Justice Department has launched a sprawling effort to obtain nearly every state’s voter registration file and to review those files for suspected non-citizens. “Ending the quiet period for those types of purges could ‘dump’ more work on election officials who will have to investigate whether the data matches are accurate while they’re in the final sprint to prepare for an election,” says MIT political scientist Charles Stewart, who spoke with CNN about the effort.