Spying cases started to arise during the cold war. It started with Whittaker Chambers accusing Alger Hiss of spying for the Soviet Union. He created government documents and claimed that they were from Hiss’s type-writer. The jury convicted him of perjury. Another spy case that was very popular was the case of the Rosenbergs. The case all started with the Soviet Union exploding an atomic bomb. The Soviet Union was thought to take years to complete this. People started to suspect Communist supporters in the United States had been sharing the secrets with the Soviet Union. Klaus Fuchs a German physicist admitted to sharing information with the Soviet Union, which allowed them to create the bomb earlier than usual. Along with Fuchs was Ethel and Julius Rosenberg, and Morton Sobell. Who belonged to the American Communist Party. When asked if they were apart of this group they denied it. They pleaded the Fifth Amendment. They stated that they were being blamed for being Jewish and for having different beliefs. They were found guilty of espionage and were sentenced to death. Some said the evidence wasn’t enough for a death sentence, but the U.S. Supreme Court refused to sentenced any different. The Rosenbergs died in the electric chair in June 1953. They were the first two people to be put to death for espionage. While Klaus Fuch was sent to prison for 14 years.