A divided Supreme Court on Tuesday ruled that Americans can't sue the U.S. Postal Service, per the Associated Press. And that's the case even when employees deliberately refuse to deliver mail. By a 5-4 vote, the justices ruled against a Texas landlord, Lebene Konan.RELATED: Police Arrest 15-Year-Old Suspect For The July Murder Of Chicago U.S. Postal Service CarrierSupreme Court Justices Shut Down Postal LawsuitJustice Clarence Thomas wrote for a majority of five conservative justices.