The Rosenbergs and
Sobell were charged with conspiracy to commit wartime espionage. The Rosenbergs were sentenced to death and
Sobell got 30 years. To quote the
source:
The Rosenberg case, coming at the height of the anit-Communist hysteria in America produced the harshest possible result: the deaths of two defendants who, as U. S. Supreme Court Justice Felix Frankfurter put it, “were tried for conspiracy and sentenced for treason.”
The question &
answer were taken from p. 452 of Great American Trials edited by Edward Knappman. The book was published by Gale Research in
1994.