Found this January 2019 article which ends:
That is the wider scandal suggested by the investigations of Trump and his cronies: The high levels of brazen big-money illegalities that ordinarily go unaddressed and unpunished. Indeed many of the alleged crimes are no longer chargeable due to the statute of limitations. “Zero tolerance” and “broken windows” policies are terms frequently used by law enforcement in discussing low-level crime. But American law enforcement appears to avoid the penthouses.
Link:https://theconversation.com/theres-a...gations-109203

IMHO this fits here and is not an issue just for the USA.