I've seen what happens when shit like that gets passed. Back home, in 1977, US senator named John David Keene proposed and passed a law that criminalized all "costumed adventuring" -- unless the vigilante in question was working directly for the US government, like my father and Jon did.
It happened because of a police strike, in protest of the extreme methods used by vigilantes - it wasn't like this. There were no broad assumptions. Vigilantes did what we were being punished for.
But -- For a long time I thought it was the best thing that could have happened.
*Pcal: Senator Christian Ward uses Thursday's attack to mount a vitriolically anti-Avenger campaign. Blaming S.H.I.E.L.D. for their training and support, Senator Ward promises to take down any masked hero operating outside the law and those that harbor them.