sentences:  During his two-year term as governor, Manning advocated the reform of the Negro Laws by pushing for an end of execution by burning and to have capital cases tried by jury at a courthouse.Upon leaving office in 1826, Manning remained active in politics and participated in the Union Party in opposition to the Nullifier Party.He made an unsuccessful run for Congress in 1826 and was also unsuccessful in his bid for another term as governor in 1830.