He was in the middle of screeching about immigration when it happened and that old hobby horse of his is pure "will no one rid me of this meddlesome priest?" style rhetoric.
If only Hitler had gotten into art school, or if Tommy "Terrible Shot" Crooks had gotten into that local gun club so they could force him to, you know, practice at the range, we wouldn't have to listen to all this bickering about who attempted to assassinate whom