(But I also argued from the start of heavy influx in 2015 that we should a) vet more b) return unwanted/unwelcome ones FAST)

And I think that this is all that Trump is trying to do - figure out how to vet the people you come from the largest state sponsor of terrorism in the world. I am sure that there are many individual Iranians that are not terrorists, but we need to find a way to separate the ones who ARE.