Although the goal of the NPU in 1888 was ostensibly to create unity between the miners, it instead drew a stronger line distinguishing members of the NPU against those of the NTA #135. Because of the rivalry, miners of one labor union would not support the strikes of another, and many strikes failed. In December 1889, the president of the NPU set up a joint conference for all miners. John McBride, the president of NPU, suggested that the Knights of Labor should join the NPU to form a stronger union. John B. Rae reluctantly agreed and decided that the merged groups would meet on January 22, 1890.