Far from a fatal disaster for the administration and the Congressional GOP, a sweeping compromise on fixing the nation’s broken system of immigration (including stricter enforcement at the border and the workplace, along with a rational means of earned legalization) will constitute a huge political plus and a significant historical achievement. Sorry Mike, been there, done that, didn't work.
I think it didn't work because there was no public drive to make it work. The public and politicalmood is much more likely to make it work. Especially if what was not taken care of last time is this time. Such as real emplyoer sanctions that go outside the law, and real security