I wouldn't as far to give this admin credit, if anything they will stand in the way in support of their unions leaders if the MRJ goes to a non-union shop.(it's where their money comes from, see the latest in Michigan) just like they did when Boeing brought some work to S.C.
Certain areas in the U.S. are business friendly, Mitsubishi is bogged down with work for many manufactures, they need to start another line and will do it where it makes the most sense.