I once heard an ancedote, I forget if it was the FBI or Secret Service (who deal with some financial matters due to the weird hybrid nature of the agency), but

I once heard an ancedote, I forget if it was the FBI or Secret Service (who deal with some financial matters due to the weird hybrid nature of the agency), but one or the other, at the time, allegedly would not even begin to investigate a matter of less than 5000 USD. Now if you can establish it's one person making many sub-5K transactions they may, but that's hard to do if they won't take notice. (The more I think the more I think it was the FBI, since the person also relayed that crimes against people often got short shrift since unfortunately one's feelings when threatened or harassed don't have an objective dollar amount)