Driving while intoxicated, or DWI, is at the center of one of the most sensitive areas of law. DWI includes operating a motor vehicle under the influence of alcohol or drugs. The specifics of what constitutes being under the influence varies by state, but it’s a surprisingly common occurrence.

Each year, 10.3 million reportedly drive under the influence. And roughly a third of those people are repeat offenders who have been picked up for DWI at least once before.

People facing charges of driving under the influence often feel …