We did "walk and chew gum at the same time" - Border Patrol and interior enforcement has continued every year, increasing dramaticall since 9/11 BTW. To answer your second question, I intend to be fooled only once.
What planet are you living on?
You might want to do some research on that.
And the dramatic increase in BP and border enforcement has enabled an dramatic increase in illegal immigration. Check the numbers.
In and of itself, this says nothing. Even a threefold increase in something might be "dramatic", but if it was tiny to begin with, it still won't have much of an effect on the big picture. And the fact that it took something like 9/11 - fifteen years after the original amnesty - to even do that much shows what a sham the amnesty was.
To answer your second question, I intend to be fooled only once.
So do you think that the country was fooled once by the '86 amnesty?