As you may have read on one of my posts, I work in a boreal environement conservation space and oddly enough, I've come across a single tree that seems completly out of place. Previous records do not make note of it, and it does seem like a relativly new growth. It's growing in a very open sunny section along with a some nearby balsam firs and Long toothed aspens, the soil is sandy and quite dry.
It was that obvious? well, I guess it can't be helped, thanks for the help, and after reading about it, it sure seems to be the culprit. Another introduced species that will require some relocating.
Well, it could be also be Robinia viscosa, I don't think I'm skilled enough to sight-ID these, and the photographs for comparison online are not stellar (from a quick search). If it's sticky to the touch along the main rachis of the leaf, then R. viscosa is the culprit. If not, then R. pseudoacacia.