What was discovered durning the investigation of the teapot dome scandal?

Answer: Senator Thomas Walsh of Montana, who chaired the investigation, explored allegations that Secretary of the Interior Albert B. Fall had issued no-bid oil reserve leases, including one at Teapot Dome in Wyoming, in exchange for generous, illegal gifts.

How was the Teapot Dome scandal discovered?

Walsh. Convicted of accepting bribes from the oil companies, Fall became the first presidential cabinet member to go to prison; no one was convicted of paying the bribes. Before the Watergate scandal, Teapot Dome was regarded as the "greatest and most sensational scandal in the history of American politics".