Fair enough, say 1% are terrorists, I don't see how anyone could believe some won't come here, however, is that really an obstacle? They did manage to hijack american planes and fly them into american buildings. You guys can't stop millions of mexicans, are some in the cartels?
I really don't think they need to be sneaking in, if they want in I am sure they could.
It sucks, but I think most people would take the added danger if it meant saving an innocent family, I am sure you would want the same compassion.