Is #Trumptaxscam Grad Student Tuition Waiver Elimination a backdoor #immigrationban?

Immigration Bans are a top priority of the Trump Administration and the GOP.  A little known fact is that over 50% of graduate students in Science Technology andMath in US Universities are from Abroad.  Perhaps the GOP House elimination of the Graduate Student Tuition Waiver is meant to discourage all the overseas PhD candidates, who have an even smaller ability to pay taxes or tuition than US based students.  Is this perhaps more of the Trump agenda immigrant phobia, essentially a back-door ban, or is this just build to crush either poor students hoping to get advanced degrees,  increase student debt, or shut down universities, which are seen to be liberal leaning.

​A. Backdoor Immigration Policy
B. Class war to deny higher education and salaries to the "lower class"
C. Another means to increase student debt, which is becoming more privatized or
D. Means to hurt US Universities that are seen as "too liberal"? 

​ "International students studying in the United States on temporary visas accounted for nearly two-fifths (39 percent) of all PhDs in science, technology, engineering, and mathematics (STEM) fields in 2013 https://www.washingtonpost.com/.../Graphics/KF_Report.pdf