> Do people have a problem with the validity of the legal reasoning, or with the court's wisdom in their final decision?
Not familiar with the case, but Citizen United was a 5-4 decision, so the dissenting opinions are probably the first place you should look at if you're looking for issues with the legal reasoning and/or the court's wisdom.
Not to mention, we now know that many on the court (and particularly those among the majority) have been accepting undisclosed gifts for years as well as their spouses accepting significant business dealings with those who at the time or subsequently had dealings with the court.
Not familiar with the case, but Citizen United was a 5-4 decision, so the dissenting opinions are probably the first place you should look at if you're looking for issues with the legal reasoning and/or the court's wisdom.