Barbie, i.e. Klaus Barbie - nazi "Butcher of Lyon"

I found an information, that Klaus Barbie, the sadistic head of gestapo in Lyon, was an U$ spy, but Wikipedia tells nothing about it, it only gives a criptic link at the bottom to der Spigel article: https://www.spiegel.de/international/germany/from-nazi-criminal-to-postwar-spy-german-intelligence-hired-klaus-barbie-as-agent-a-740393.html

The Spigel article says that Americans helped flee Barbie to Bolivia in 1951. In some Polish source I found that in 1951 he fleed to Argentina, with the help of catholic bishop Alois Hudal (the one who helped dr Mengele), and then Barbie fleed to Bolivia.

This is so dirty I want to vomit.