I find Peikoff's comments particularly offensive since the vast majority of immigrants are here to work, not collect welfare. I also find it disturbing since the namesake of the institute that he founded was herself a Russian immigrant. Ayn Rand came here to live and work as freely as possible, and better her lot in life, just like so many others before and after her.
You can read the rest of Diana's excellent response to Peikoff's election commentary here.
Update: It was brought to my attention that Peikoff is a Canadian immigrant. I suppose he came to the US for welfare? I'm fairly certain he did not, but for him to assume the current lot of immigrants is so different from his own is ignorant, at best.