Susie, how would you have protected us from these terrorists?

Susie O’Brien disagrees:

Australian borders should not be closed to Muslim immigrants. They should be closed to terrorists and terrorist sympathisers, not all Muslims.

That is a noble, broad-minded and fashionable attitude. Unfortunately, these are just some of the Muslims who would not have been stopped by O’Brien’s preferred rules:

- Numan Haider, the child of Afghan refugees, who stabbed two police in Melbourne.

- Man Monis, the Iranian refugee, who...