With the figures the msm puts out, it's 1 illegal to every 30 Americans (adult and child). You're right, the number could very well be much worse.
It likely is worse. I have seen the invasion of the illegals take over where I live and it is so annoying that our media promotes it along with our government. We want California back for legal Americans. Illegal seems to mean nothing in this instance and it is killing our economy and our freedoms.