Robert K. LaFollette was one of the leaders ot the progressive movement from 1900 until his death in 1925. He built a progressive machine in Wisconsin which had control of the Republican part1 in that state for most of this period. His program of legislation and reform in Wisconsin became a pattern tor other states. He was a leading spokesman in the United States Senate tor progressive Senators. He worked with the Wilson administration and the Democrats on domestic reform measures. He supported a major part of Wilson's foreign policy through 1916.