I read that bill and saw nothing wrong with it. The majority of it involved a warrant or permission from either the person or the provider.
If the law enforcement agency is getting something on you that they shouldn't, then any judge can throw out that evidence under the 4th Amendment, not just the SCOTUS. Fruit of the poisonous tree comes into effect here as well. If your email, that they shouldn't have been accessing to begin with, gives them info that leads them to some other evidence then they can't use that evidence either.