"Word war muddles immigrant debate"
This article goes in to the use of loaded language to obscure the immigration "debate", something that you are probably familiar with, but if you aren't check it out. I note, however, the following:
George Lakoff, a Democratic political consultant and linguist at UC Berkeley, said anti-immigration groups so far appear to be winning the language war, and the word "amnesty" is their most powerful rhetorical weapon.
I hope that "linguist" is the one who used the term "anti-immigration".