First of all, I agree with the premise of your question. When we're dealing with private prosecutions, the Attorney General has the authority to step in to either stay the prosecution or to conduct the prosecution on behalf of the private prosecutor. When we're dealing with civil actions, whether we're dealing with judicial review, as you do in the bill, or a civil action writ large, the Attorney General does not have a role unless he's one of the litigants. The Attorney General would not have any role in a civil action between two other parties.
In terms of standing, there are some statutes that have some standing provisions, but it is something that's otherwise largely codified in case law and common law.