Corporate Connections / Mail Fraud / Scam

I received a letter in the mail regarding winning $ and that the voucher enclosed just needs to be signed and returned with my payment of $20.00 checks only. WTH? How can we stop these people from taking $ from hard working people who really wish this was real so that we could see brighter days and stop living pay check to pay check. I don't know how these individuals sleep at night, and how they live knowing what they do for a living. Please be careful. I now throw away all mail I receive from LV; CA; AZ; regarding sweepstakes.