the first "the us manages its immigrants better" has already happened.
aka complacency.
fewer moslems explains it just as well. not that all moslems are terrorists. but the percentage of moslem terrorists is higher than any other religion. pretty much wherever they are. appears to be something to do with islam. at least islam as it is interpreted by many.
we need a new exegesis, peeps. until then, keep immigration strict. there's no choice.