During this time, the rivalry between the two unions increased and eventually led to the formation of the UMW. The first of many arguments arose after the 1886 joint conference. The Knights of Labor did not want the NTA #135 to be in control, so they went against a lot of their decisions. Also, because the Knights of Labor were not in attendance at the conference, they were not able to vote against actions which they thought detrimental to gain rights for workers. The conference passed resolutions requiring the Knights of Labor to give up their secrecy and publicize material about its members and locations. The National Federation held another conference in 1887 attended by both groups. But it was unsuccessful in gaining agreement by the groups as to the next actions to take. In 1888, Samuel Gompers was elected as President of the National Federation of Miners, and George Harris first vice president.