Fair enough then, call it just a term, an expression.
But whatever her job was called, she failed in it miserably.
https://thehill.com/opinion/immigration/4813704-kamala-harris-border-czar-denial/
https://www.congress.gov/bill/118th-congress/house-resolution/1371/text#:~:text=H.Res.1371-,H.,secure the United States border.