I don't think being a lawyer is a technical requirement for SCOTUS or AG, but it is considered necessary by tradition.

I'm going to search to see if there was an exception because I have that, but not the details, in the back of my mind.

This is pullled from a tweet that appears to be well researched on the subject.

Terry Lambert , former Sr. Software Engineer at Google (2011-2012) Updated July 1, 2018 · Author has 15.6K answers and 42.7M answer views

Levi Woodbury

was the first U.S. Supreme Court Justice to have attended law school. While others were lawyers, they go there by apprenticing or “reading he law”.

Other Justices who were not lawyers (studied but failed to graduate) are:

Henry Billings Brown

Melville Fuller William Henry Moody George Shiras, Jr. Benjamin N. Cardozo Joseph McKenna Stanley Forman Reed Robert H. Jackson James Wilson

The following were self-taught and practiced as lawyers:

James F. Byrnes

Samuel Chase John Hessin Clarke James Iredell Thomas Johnson

There are additionally some 20 justices who only trained to the level of what would, today, be considered an undergraduate criminal justice degree, and not a law degree.

It’s not required.

I don't think being a lawyer is a technical requirement for SCOTUS or AG, but it is considered necessary by tradition.

I'm going to search to see if there was an exception because I have that, but not the details, in the back of my mind.