Do I need to authenticate my original criminal record document for a NON-OA Visa from Minnesota, or is a notarized signature sufficient?

The requirement for submitting a criminal record document for a NON-OA Visa typically mandates that it be from an official state or federal authority and not older than three months. According to user experiences, as long as the document is on official letterhead, it may be sufficient without further authentication. However, a notarized signature may also enhance the credibility of the document.