Prosecutorial discretion.
They don’t prosecute federal pot laws either.
At the state level, the office is openly partisan, meaning elected under one party banner or another. For the feds, the political bias is also sought. They are labeled non-partisan only because they do not stand for election. They are highly politically biased, as a group.
“Prosecutorial discretion.”
I never understood why one person gets to arbitrarily determine what laws or crimes to prosecute.
That is an incredible amount of power for one person to have - it supercedes that of the legislature and executive.