Question for union workers

I live in the south and am non union. I have no issues with unions as I'm neutral on them but being I grew up in the south I have found my own way(making just as much if not more than most union hands I work around)

My question is, I am seeing a lot of people freak out about the deportations that are starting to take place and the crack down of illegal crossings.

Now from where I'm at, most of our construction companies(residential and commercial) hire people knowing dang well they aren't legal. They give obviously fake names and recently heard of a group of 8 people bragging they all use the same SS number.

Regardless, shouldn't unions be stoked about the opportunity to expand its power as the people who are truly causing wages to stall are being removed. Sure we can blame the companies as they are the ones hiring them but if the source of cheap labor is removed then that should give a chance for well meaning unions to expand.

Note: I've seen the same happening up north in strong union areas where non union companies are hiring illegals by the dozens to compete and take jobs. This isn't just a non union state thing.

So the question is why are y'all so against criminals being removed from our country?