They also plan to kick away the safeguards around chicken processing so while that price might come down (also hard to say, since undocumented also make up a chunk of that workforce), the chances of it having salmonella are probably going to go up.
Some percent of chicken already does, for sure. I'm saying that percentage is going to go up, probably a lot. Iirc chicken packages have a processor number printed on them, and you can look up statistics on how many times salmonella was found there.