There were spies. They spied for allies.
The Soviet Union was an official ally during the war.
The USSR was an ally in the vein of being allied with a natural enemy as the lesser of 2 evils to defeat the Nazis. No one can seriously equate them with our British allies. The spies that were supplying info to the USSR were doing it not for altruistic reasons to advance democracy but for purposes of aiding a communist philosophy they believed in and wanted exported to the US.They continued to do so after the war, Can you argue that supplying the USSR with the Atom bomb technology after the war was over was for purposes of “aiding an ally”?
You are being obtuse and as stupid as FDR in your quacking about the USSR being our allies and therefore giving them the secret to nukes was not worthy of execution.