However, Senators did want to know about the LDS Church's controversial practice of polygamy, especially since 1890 when the practice was formally abandoned. Surprisingly, Church President Joseph F. Smith admitted that he had fathered eleven children by five wives since 1890. Asked about his role in receiving revelations for the church, Smith replied that he had received none thus far. Other questions probed the church's involvement in politics, including action taken by the church against Apostle Moses Thatcher for saying that "Satan was the author of the Republican Party."

To a large extent, the Mormon Church, not Senator Smoot, was the real target of the Senate's scrutiny. Some felt uncomfortable about this emphasis. Senator Bailey (D-Tx) "objected to going into the religious opinions of these people. I do not think Congress has anything to do with that unless their religion connects itself in some way with their civil or political affairs." But Smoot's critics proceeded to show a convoluted tangle of Utah business, political, and religious affairs and what they considered to be un-American religious supremacy in all areas. They argued that a Senator "legislates for 80 million people who hold as their most cherished possession ... a respect for law because it is law, as Reed Smoot, unhappily for him, has never felt nor understood from the moment of his first conscious thought down to the present hour. "