Indiana also has this law and it was highlighted in this morning's paper. Lets face it a lot folks know the left passing lane is usually smoother pavement due to the lack of heavy trucks pounding it to pieces. So they figure to H--- with you I am going to stay out here and enjoy a smoother ride.
None of us are complaining about the guy who passes slower traffic and will get back in the right lane just as soon as he safely can. However we all know there are those that stay in the left lane out of stupidity, being obtuse, and inconsiderate.