Mr. Spock, please distinguish between court records and police records. Court records can be sealed or in certain situations expunged. I don’t know what Supreme Court decisions Ocean is talking about but I assume he refers to Canadian common law. In the USA, I am aware of no such common law. However a significant body of privacy law has developed in recent years which forbids filing any personal identifying information in Court (birth dates, social security numbers, any medical record of any kind, other personal ID numbers or identifiers) and there are penalties for doing so if one doesn’t immediately move to seal the Court file.
No such law exists on police records as they sit in the police department. Different story once they are filed - in the public court file they are redacted.
It’s possible if a nolle prosequi were entered by the prosecution (under American common law) that records get expunged, but those are only court records and only after a period of time passes, in CT I believe it’s 13 months, wherein the defendant does not have further charges and lives up to terms of dismissal.
I once had a client ask me if, after a nolle prosequi entered against her 17 year old son on a 7th degree larceny charge with expungement of Court records, whether “records of the arrest can be deleted from the Internet.” I called my private investigator who accesses arrest databases and asked whether such a thing was even possible. He laughed out loud and said “no.” It stays in the arrest databases and can be accessed by LE and PIs with connections. Meaning a good background check - if done - will pick that shit up.