I haven't had many humanities or arts. I have had World History, Economics, and Ice Skating. All three teachers appeared to be, and sounded like, they were born and raised here.
Math and engineering - One Italian, one Indian, one Chinese.
Not quite a majority, but definitely more than in other disciplines. I do see other math, sciences, and engineering professors though, who are definitely not originally from the US.
The only issue I have with that - strong accents make it difficult to understand them. Calculus for example, I went from someone with a strong Italian accent to a strong Chinese accent. A good portion of the first week is just learning to understand what the professor is saying.