[quote=@Fallenreaper]
<Snipped quote by Dedonus>

Couldn't the fact, in cases as they have made enemies or I assume, arise that outing their indenties puts them at high risk? Not sure but I think there's ways around that which allows witnesses to be anyonmous. 

[/quote]

6th Amendment gives the accused the right to confront witnesses.

https://www.avvo.com/legal-answers/can-witnesses-of-crime-be-disguised-or-anonymous-i-1710987.html

http://lawandthemultiverse.com/2011/01/03/costumes-and-the-confrontation-clause/

The only way out would be having an amendment similar to the DC's 12th amendment, which would allow the heroes to be dressed in costume and not answer questions about their civilian identities.