In Ohio, documents used require both an acknowledgment by a notary and two witnesses. There were a lot of cases where the witnesses weren't actually present when the documents were executed. Often times, a notary signing agent would go to the borrowers' homes and the documents were returned to the office where someone there would add the witnesses signatures. It didn't take long for the bankruptcy trustees to catch on and they were able to set aside mortgages that were not properly executed.
In response, the Ohio legislature changed the law - now, only the notary is required, no witnesses are needed. This was probably the result of real estate, mortgage and title industry lobbying efforts. But, I wonder now if even this lax standard is being properly followed. I came across a document that set off warning bells.