University of Southern California students were told not to use the term “illegal immigrant” on their final exam, Campus Reform reported.

A teaching assistant, on behalf of Professor Alicia Chavez, emailed the request to students of Chea’s American Studies course, “America, the Frontier, and the New West” — and one student shared the email on Facebook.

Ironically, progressives who are offended by factual terms for a person’s legal status wouldn’t last two minutes on the open plains as the West was settled, one can assume.

The message reads: “Hi everyone, One last message from me for the semester: on your final exams please refrain from using the term, ‘illegal immigrant’ to refer to human beings, as Professor Chavez has requested (or mandated). Instead please use ‘undocumented immigrant’ or ‘unauthorized entry’ to describe folks’ status or how they may have arrived in the US.”

Related: Immigrant Population Tops All-Time High

The student who posted the email criticized the professor for being biased against conservative students, arguing that the professor’s decree on “undocumented immigrants” goes against freedom of speech.