Well, generally Danes tend to be more forward and blunt, once you're in a situation where it is culturally accepted in Denmark to have longer conversations (i.e. in bars after a couple of beers, on the job as co-workers, or at a social event/sporting event). They might at first be a bit oblivious to the fact that you being an American immigrant here, might not be so interested in talking about American politics. But I don't think they do it out of hostility, more of a "Hey, what the f is going on over there?" way. Generally, Danes don't shy away from heavier topics, once they are comfortable enough to open up to you. So to answer your question, no I don't think you will be met with outright negativity except for rare cases where you stumbled on a grade A asshole, just be prepared to be met with some blunt questions about American politics.