Conversation so far:
What president did nelson work with?
Richard Nixon.
What was the reason Nixon did this?
the perception was that the Alliance for Progress was a failure.
Why was this a failure?
CANNOTANSWER.
Is there anything else interesting?
Nixon appointed his most powerful political rival, New York Governor Nelson Rockefeller to direct the study.

Question: Did they get along well?
Self-contained rewrite: Did Nelson Rockefeller and Richard Nixon get along well?