"... what opponents refuse to recognize is that illegal immigration is under better control today than at any point in the last half century."
Granted this is true, isn't it a relative thing?
Couldn't we say "the flow of drugs into this country is under better control today than at any point in the last half century" as well? But does that mean there is no more drug problem?
And what about the ripple effects of "anchor babies"? What about the disparate demand on public, taxpayer-paid services that illegal immigrant families represent? Is this no longer true?