I don't he says foolish things. The first was a summary of a large issue: "they send criminals". It's true. And that's ignoring the fact that an illegal is still here illegally no matter what else he does.
The second was clearly a quip, a jab at McCain. Proof: the crowd laughed...LOUDLY...it can be heard on the tape. It was about McCain.
In his replies last weekend Trump said he had never asked God for forgiveness. What do you think of that?