The Tammany Hall political machine, which was the largest political force in New York at the time, was in control of Central Park for a brief period beginning in April 1870.[139] A new charter created by Tammany boss William M. Tweed abolished the old 11-member commission and replaced it with one with five men composed of Green and four other Tammany-connected figures.[139][140] Subsequently, Olmsted and Vaux resigned again from the project in November 1870.[139] After Tweed's embezzlement was publicly revealed in 1871, leading to his imprisonment, Olmsted and Vaux were re-hired, and the Central Park Commission appointed new members who were mostly in favor of Olmsted.[141]