Conversation so far:
When did Frank Church become involved in politics?
Frank Church became involved in politics in 1952
How was Frank Church involved in politics?
Frank Church became an active Democrat in Idaho and after an unsuccessful try for the state legislature in 1952, he ran for the U.S. Senate in 1956.
Was Frank Church a republican?
No, Frank Church was Democratic
How old was Frank Church when he ran for U.S. Senate ?
Frank Church was 32
What else can you tell me about Frank Church's time in the U.S Senate besides when he ran?
Frank Church was a key figure in American foreign policy during the 1970s, and served as chairman of the Senate Committee on Foreign Relations from 1979 to 1981.

Question: What was his best accomplishment during his political career ?
Self-contained rewrite: What was Frank Church best accomplishment during his political career ?