[nopardons]

Opp was an egotist and something of a moral relativist. He angered and instilled hatred in some of those who worked with him on the Manhattan Project. Heck, most of those guys had something of a screw loose about something or other.

I think you may have nailed it ... Harry didn't care about the USA; he only cared, in oh so partisan a way, to keep the GOPers from possibly gaining anything from FDR's and his inability to stop Commies and Commie sympathizers in America.

[I_Love_My_Husband]

In 1946 Hoover again went to the White House, this time providing Harry Truman with a list of known Communists and sympathizers still in the government. Truman's response was: "What am I going to do? Give those @#%&* Republicans up on the Hill something to bash me with."

That was from the cached link.

[Doctor Stochastic]

He angered and instilled hatred in some of those who worked with him on the Manhattan Project.

This is the exact opposite of what those who worked on the project have told me.