... which the movie immediately chucks out the window so all the life-sized action figures can go beat the s**t out of each other at an airport.
When Iron Man and Captain America let their fists do the talking, they're really just mad at each other over the fate of Cap's friend Bucky and the role he played in killing Stark's parents. Neither are truly worried about the effects of superheroes on the modern world. Then, after they're done pounding each other into PG-13 pulp, they go their separate ways. Stark is a company man, Cap is a sexy outlaw, and they're both apparently right in their own way.
Except the movie never answers Ross' question, though the heroes sure destroy a bunch of public property while pretending to debate it. Superheroes probably shouldn't be allowed to act with impunity, because all of their self-created problems are racking up civilian deaths and destruction around the globe. But that serious answer doesn't allow for more movies to be made, so Civil War pretends that both options are viable. Some superheroes will be regulated, while others will be free to do whatever they want, and we'll all cross our fingers that they won't accidentally blow up the planet. Great talk, team!