'But Americans should get dibs!! Not these horrible foreign students!!'
Can't help you with xenophobia, but these 'horrible foreign students' already only have a 1 in 4 chance of actually staying on and getting these jobs (that's the success rate of the H-1B lottery, which is mandatory).
So next time you want to rant about how oligarchs don't give Americans a level playing field, think about that statistic too.