American informed about criminal wrongdoing, it follows (12)

'american' is the definition.
(Wisconsinite is an example)

'informed about criminal wrongdoing it follows' is the wordplay.
I cannot really understand how this works, but
'about' could be 'on' (as in a book 'on' a certain topic) and 'on' is found within the answer.
'wrongdoing' could be 'sin' (sin is a kind of wrongdoing) and 'sin' is present in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
This explanation may well be incorrect...