Conversation so far:
What did Fred have to do with the Watergate hearings?
In 1973, Thompson was appointed minority counsel to assist the Republican senators on the Senate Watergate Committee.
what was his role on the committee?
Thompson was appointed minority counsel to assist the Republican senators on the Senate Watergate Committee.
could you tell me something interesting about the article please.?
Thompson was sometimes credited for supplying Republican Senator Howard Baker's famous question, "What did the President know, and when did he know it?.

Question: how did those questions help the committee?
Self-contained rewrite: how did Senator Howard Baker's question help the Senate Watergate Committee?