I think you are not quite accurate as a new one was built in ND that went on line in 2015.
There are others in the planning stages in ND, and I believe there is one under construction now being build by an Indian Tribe.
http://fuelfix.com/blog/2013/05/10/ground-broken-for-oil-refinery-on-nd-reservation/
Since ND became a major producer, with minimal leftists in the state, it only makes sense to start construction keeping the jobs and more of the oil money in the state.
Good news.
Even if they are small production plants designed to produce primarily diesel fuel for local consumption.
At least they broke the licensing log jam.