Conversation so far:
What was the Covode Committee?
The House created the Covode Committee to investigate the administration for alleged impeachable offenses, such as bribery and extortion of representatives
What year was the Covode Committee created?
In March 1860, the United States House of Representatives created the Covode Committee.
Who was a part of the first Covode Committee?
The Covode Committee, with three Republicans and two Democrats, was accused by Buchanan's supporters of being nakedly partisan.
What did the Covode Committee have to do with James Buchanan?
The Covode Committee was unable to establish grounds for impeaching James Buchanan.
Was James Buchanan a part of the Covode Committee?
James Buchanan is not part of the Covode Committee.

Question: Why was they trying to impeach Buchanan?
Self-contained rewrite: Why was the Covode Committee trying to impeach James Buchanan?