Conversation so far:
When did Thomas A. Hendricks become Senator?
Thomas A. Hendricks represented Indiana in the U.S. Senate from 1863–1869.
What did Thomas A. Hendricks do as senator?
Thomas A. Hendricks challenged what he thought was radical legislation, including the military draft and issuing greenbacks.
What did Thomas A. Hendricks stand for?
Thomas A. Hendricks supported the Union and prosecution of the war, consistently voting in favor of wartime appropriations.
What did Thomas A. Hendricks oppose?
Thomas A. Hendricks adamantly opposed Radical Reconstruction.
How did Thomas A. Hendricks vote on key issues?
Thomas A. Hendricks voted against the Thirteenth, Fourteenth, and Fifteenth Amendments to the U.S. Constitution that would, upon ratification, grant voting rights to males of all races and abolish slavery.

Question: What else?
Self-contained rewrite: What else did Thomas A. Hendricks vote on key issues?