Immigration is confusing and messy. I have a student whose parents have been working in the US with visas for almost a decade. They've recently had a baby who is now a US citizen. The parents are in process for their US status and have another 4 years....waiting.
I have many friends on artist visas and spend quite a lot of money on immigration attorneys to sort out their paperwork. It's not an easy process.
When I was a child, I had a family friend whose husband was tragically killed in a car accident while picking up items at the store for his newborn child. He had been serving the US military for over a decade (originally from Philippines). Soon after his funeral, his widow, newborn daughter and American born son were served their deportation papers. They were in process to get US status but the death interrupted that. Things got sorted out in the end but not without A LOT of effort.
For those seeking US status legally and going through the daunting process, it is not good when others take advantage whether rich or poor (birth tourism) or find loopholes.
I don't think any politician can sort out the system....not until it becomes a big enough conversation of concern where people actually listen to each other without name calling. Opening the doors further just piles more chaos on the chaos.
It's a messy house and the sentiment seems to be whatever....join the party!