 Complete the following phrase:  Presidents have often been the subjects of Congresss legislative investigations. For example, in 1832, the House vested a select committee with subpoena power to inquire whether an attempt was made by the late Secretary of War... to fraudulently award... a contract for supplying rations to Native Americans and to further... inquire whether the President... had any knowledge of such attempted fraud, and whether he disapproved or approved of the same. In the 1990s, first the House and Senate Banking Committees and then a Senate special committee investigated President and Mrs. Clintons involvement in the 