His numbers are derived from former border patrol and a complex formula of entries and exits at Canada and Mexico borders over a sustained period of time. they also include some 2 million visa overstays which are seldom mentioned.
If the general population knew the true number of illegals instead of the DBM number, it might make a difference.
Wallace bringing up McCain’s age.
No doubt the numbers are understated. In 1986 the USG estimated that one million would apply for amnesty. The number wound up to be 2.7 million.