Hi, Blacksword,
I have been thinking about this group of items you offered as the reasons for the failure of the 1986 Immigration Act.
Now, I do not want to belittle our law makers - especially after watching them in action with this debt ceiling crisis activity…

but, really, just what would you expect on a practical basis for a law adddressing the “… underlying marcro-economic and geo-socio-political…” elements of immigration? Really, just take that one and flesh it out just a bit so we can see what is going on.
Personally, I do not have a clue on what would be required to comply with this - and how anyone could measure it to see if this was meeting the established goals.
I thought the 1986 law was good and was under the impression that this was going to work (of course, I have no real dealings with immigrants, lawyers or enforcement officers - so, it gradually left ‘my radar screen’ and I moved on to other things. But, the demand for yet another round of amnesty sparked the inquiry that if the '86 law failed, why on earth would we want to try this again? My guess is that from '86 forward, actual even-handed enforcement was dropped and more illegals came over and we were back to the same problem.
Yes, employers can and do break the laws designed to prevent these situations from developing - and in the process, deportation stands out as something is deserved for those who have broken the law. Here is truly an intriguing case for all of its complexities and the years it took to resolve:
chron.com/disp/story.mpl/business/6564543.html I provide this story as a possible example you could use to address the failure of the 1986 law. If this is not possible - fine - but, I would like to see a practical application of what you are proposing.
God bless