Former St. Joseph County prosecutor pleads guilty to driving while visibly impaired file photo and last updated 2021-01-29 11:54:24-05 LOCKPORT TOWNSHIP, Mich. â Former St. Joseph County Prosecutor John McDonough pleaded guilty Thursday to driving while visibly impaired last year. He was sentenced to one year of probation, according to a news release Friday. McDonough was previously charged by Michigan Attorney General Dana Nesselâs office with operating a motor vehicle while under the influence of alcohol and having open intoxicants inside a motor vehicle.