A wetback is someone that swims across the Rio Grande river to illegally enter the USA.
Only a cultural Marxist, practicing political correctness would object to the term.
I know what it means, and how it is used.
One doesn't have to be a "cultural Marxist" to note terms that are derogatory.
If you go back to Ike and the 50's as your racial ideal, then why not suggest separate drinking fountains and refusing to allow blacks to go to the same hotels as whites? Then we'd be in the "good old days" where everyone knew his or her place and none of these "colored" people would be in our space............... right??
(Incidentally, I'm as conservative as they come when it comes to stopping illegal immigration, but the racism that often accompanies so-called conservatives is reprehensible. And calling anyone who opposes it a "cultural Marxist" is nothing but a flaccid excuse for having no legitimate argument).