Missoula prosecutors have charged a St. Ignatius woman under a new state law, protecting children from drunk drivers.
Theresa Birdsley is likely one of the first suspects ever accused under it.
Senate Bill 160 allows that anyone transporting a child under 14 in a motor vehicle, while under the influence, faces a felony.
Police report Theresa Birdsley was weaving along a city street about 4:30 a.m. Wednesday, when she was pulled over.
Detectives said a 2-year-old child was in her car.
She appeared in court, where bail was set at $2,500.