That's the point of this thread. The things would Iron Man and his Superhuman Registration Act be that dumb enough to try it. And no one still gets the joke.
I can see it now. Iron Man talking to Captain Universe and telling him the only way to prove that he on everyones side it to give up his secret identity. And Captain Universe and what identity because I've close to like everyone like Spider-Man, Hulk, Silver Surfer, Mr. Fantastic, Invisible Woman, Doctor Strange, some of the X-men and woman, as well as some of you friends at the Avengers, as well as some normal men and women, and I think a toddler, both cops and robbers, and even a dog once. I've even been just about everybody in New York. And Iron Man with his hand over his face saying, "Oh god, what was I thinking asking him for his secret identity?"
With some one like Captain Universe does that mean that the hole hole state of New York will have to register?