[Irenic]

What's the secret that we're missing, that they know, that we don't know?

******************

The United States of the Americas

[Black Agnes]

What they know is the partial contents of their NSA files.

Apparently that’s enough to vote for la raza nation.

[oldbrowser]

What's the secret that we're missing, that they know, that we don't know?

First and foremost politicians are interested in protecting their careers. McCain, Rubio, border states, they believe that the inevitable result will be some sort of legalization for a majority of the illegals.
Given that scenario, they probably think that it is best to try to get out in front and try to manage it somehow .
Trying to take a principled stand against an inevitable result is heroic. But heroes don't last long in politics (Palin, West, Bachman, etc.).