You said that illegal immigration is a cause celebre of the left. I asked for a demonstration that the left had spoken positively about illegal immigration. All of the links you provided were of people speaking negatively about illegal immigration.
So how can illegal immigration be both a cause celebre of the left, and something that the left condemns?
Have we misunderstood each other?
Jerry Brown trying to block legal Vietnamese immigrants in 75 : https://www.wsj.com/articles/when-jerry-brown-tried-to-keep-...
Feinstein: https://www.youtube.com/watch?v=lvRZdNoHEf8
Obama as well, but this is enough to prove the point.