In May 1913, the state legislature established a Joint Committee to investigate the financial conduct of state institutions, chaired by Senator James J. Frawley, a loyal Tammany Hall Democrat. In the summer of 1913 this committee, using Tammany-provided information, accused Sulzer of diverting campaign contributions to purchase stocks for himself and perjuring himself under oath. Sulzer and his supporters averred that the charges were made under instructions from Murphy in order to remove Sulzer as an obstacle to Tammany Hall. Some historians have corroborated Sulzer's version of events. Sulzer also questioned the constitutionality of the committee itself. But as evidence emerged regarding his use of campaign funds, he began to lose the support of the national Democratic Party.