In 1921, Governor Arthur M. Hyde appointed Miller President of the St. Louis Police Board.

Several major public works projects approved by voters in a 1923 bond issue were completed during Miller's administration, including the construction of the Civil Courts Building.

One of these public works projects, an $8,000,000 street lighting initiative led to charges of graft and corruption in city government.

An investigation by the St. Louis Post-Dispatch found that the lighting contractor, A.M Ryckoff of Chicago, had overcharged the city by more than $150,000.

He died in Kansas City on January 6, 1955 and was buried at Mount Hope Cemetery in Joplin, Missouri.