[1] Miller became an adjunct professor at the Southern Illinois University School of Medicine in the Department of Medical Humanities in 1974.

[1] In 1984, he was elected to a ten-year term to the Supreme Court of Illinois defeating Democratic candidate and fellow Appellate Judge Jim Craven.

[4] In 1997 Miller was openly critical of the conduct of then Chief Justice James D. Heiple who was accused of abusing his position during traffic stops and disobeying police.

The Illinois House of Representatives panel voted not to impeach Heiple though he did step down as chief justice but remained on the bench.

[7] Miller wrote the majority opinion for the court in overturning Andrew Wilson’s original murder conviction, which denounced forced confessions and police brutality.

He also wrote opinions on rulings that upheld the state's guilty but mentally ill statute and ensured privileged communications between sex assault victims and rape crisis counselors.

[7] Upon retirement, Miller sailed between Florida and South America as well as studying the developing field of bioethics.

The next year the commission issued a comprehensive report detailing the problems of the system and gave forty recommendations for reform.

[9] In February 2014, he was one of a group of Illinois lawyers who wrote an open letter to President Barack Obama asking him to close the Guantanamo Bay prison.