I may not be 100% correct on this issue, I have heard if there freight is originating out of Canada (point A) then they can only goes as far as the freight allows (point B), then they must return back to Canada (point A).
This would be interesting is if lets say Reimer is dispatched into Chicago from somewhere in Canada. Then Chicago dispatches them to Salt Lake City, I think this violates the NAFTA agreement.
Like i said before I don't know if i am 100% correct on this, but there is a stipulation from what i have heard before, and by talking with other Reimer Drivers out of Chicago, which have told me in the past that they can only deliver and take back freight, but they cant go searching for freight in the US.