AOC does NOT have a degree in economics.
This is the first time I’ve heard that. I poked around and found this article to be the most informative:
https://www.redstate.com/jenvanlaar/2019/04/02/aoc-really-economics-degree-boston-university/
Looks like she double-majored at Boston University, in International Relations and Economics.
Do you have a more definitive source?