Later in 1910 he moved to Washington , D.C. , where he established a real estate business . He became involved in progressive politics and he was the assistant sergeant at arms at the 1912 Progressive party national convention . He also continued legal work . In 1914 , Plummer was an assistant for attorney John E. Collins in a trial before Judge Daniel Thew Wright . Later , Wright was at that time the subject of congressional investigation , and Plummer spoke before the committee against Wright . In late 1915 , Plummer was again in trouble with the law , and was sentenced to 30 days for using fake checks . In early 1916 , he was indicted along with Thomas F. Karr on embezzlement charges
1912 Progressive party national convention
1912 Progressive National Convention
H. Vinton Plummer