(at table, second from right) testifying before the
U.S. Senate committee investigating the Teapot Dome oil leases in 1924 In April 1922, a Wyoming oil operator wrote to his senator,
John B. Kendrick, angered that Sinclair had been given a contract to the lands in a secret deal. Kendrick did not write back to the man, but two days later on April 15, he introduced a resolution calling for an investigation into the deal. In March 1923, the U.S. Senate launched their first investigation into Teapot Dome.
Republican Senator
Robert M. La Follette of
Wisconsin led an investigation by the Senate Committee on Public Lands. At first, La Follette believed Fall was innocent. However, his suspicions were aroused after his own office in the
Senate Office Building was ransacked. Democrat
Thomas J. Walsh of
Montana, the most junior minority member, led a lengthy inquiry. For two years, Walsh pushed forward while Fall stepped backward, covering his tracks as he went. No evidence of wrongdoing was initially uncovered, as the leases were legal enough, but records kept disappearing mysteriously. By 1924, the remaining unanswered question was how Fall had become so rich so quickly and easily. Harding-era U.S. Attorney General
Harry M. Daugherty and others in the
Harding Administration were implicated by
Thomas W. Miller, the
Alien Property Custodian, for pressuring him to deposit funds in the Midland National Bank where Daugherty's brother Mally "Mal" S. Daugherty served as president, when Daugherty refused to investigate the Teapot Dome Scandal. On January 17, 1927, in the
McGrain v. Daugherty ruling, the U.S. Supreme Court upheld a contempt conviction against Mally Daugherty which was related to a contempt citation which was issued against him in 1924 However, the Supreme Court decision to uphold Mal's contempt conviction would also result in the Midland Bank case against Daugherty passing into history. Both reserves were returned to the Navy. in the
Tularosa Basin of New Mexico, because of "unpaid loans" that turned out to be that same $100,000 bribe. Sinclair served six months in jail on a charge of
jury tampering. Although Fall was to blame for this scandal, Harding's reputation was permanently sullied because of his involvement with people associated to it. Evidence proving Fall's guilt only arose after Harding's death in 1923. The Teapot Dome oil field was idle for 49 years following the scandal, but went back into production in 1976. After Teapot Dome had earned over $569 million in revenue from the of oil extracted over the previous 39 years, the
Department of Energy in February 2015 sold the oil field for $45 million to New York–based Stranded Oil Resources Corp. ==Legacy==