Has your son given any thought to a graduate robotics degree? Machine learning and AI are core in this field. My son is starting his third year as a Michigan aerospace engineering PhD student. One of his housemates is a Michigan robotics PhD student, so I’ve looked at it a bit. It’s an incredible program! https://robotics.umich.edu/academic-program/
They attract top students from all over the world, including from MIT, Caltech, CMU, Michigan, Illinois, and top international universities. https://robotics.umich.edu/people/students/