Actually lets look at what you actually said:
I've known four illegal aliens, three of them quite well, over the years
Three of them quite well.
This is a pretty clear statement. A smoking gun if you will...
Are you saying that everyone you've ever known has never broken a law?
No offense, but this is a dumb statement. I don't make it a habit of asking the people in my work and life if they have a past criminal record. But I can assure you, I don't know "three illegal aliens quite well". Even if I did, I would never admit it. LOL!