Someone else has already answered your question about the "dreaded diseases" I referred to. Are you not concerned at all about allowing terrorists and criminals walk right in?
Some illegals may be sick--no surprise there. We're quarantining the sick ones out of the kids, from what I understand, so I don't really see any "news" here, although a concern for sickness is of course prudent. And I don't remember ever saying I wanted to roll out a red carpet for crooks and terrorists.