 He studied law, was admitted to the bar in 1835, and practiced in Maspeth.He was a member of the New York State Assembly (Queens Co.) in 1851; and was a delegate to the Democratic state conventions of 1851, 1853 and 1856.Maurice was elected as a Democrat to the 33rd United States Congress, holding office from March 4, 1853, to March 3, 1855.