USA -- The USPS must run the biggest insurance scam in the country. When a person mails a package they ask the person if they want insurance. The insurance is worthless because the USPS does not pay their insurance claims. Also, you can not sue the USPS and win.
Their COD service is also a scam. If you ask them they will tell you that the sender can specify COD payment by Money Order only. The USPS does not enforce Certified Payment. The recipient is free to pay by forged check, fake check, real check, etc.