a member of president obama s cabinet is under investigation now for hit and run. after allegedly leaving the scene of one collision, then causing another. the white house says health issues were a factor. but there are so many unanswered questions. brian todd has been investigating the story for us. what are you finding out? there are a lot of unanswered questions, wolf. commerce secretary john bryson is now back in washington after the accident over the weekend. the information is still murky. we re told the secretary did have some kind of seizure at some point. the commerce secretary allegedly caused traffic accidents at two different scenes within about five minutes. the sequence started just north of los angeles. at 5:00 p.m. local time on saturday, police say he was driving his lexus southbound and rear ended a car waiting at a rail crossing. at some point after that he got out of the vehicle, made contact with the individuals. for some reason got back in the vehi