If you ever get a chance you should attend one of the resistance activism trainings that Pramila Jayapal puts on every now and then. She does a pretty good job of summarizing the history of immigration legislation at the start.

In summary, she is pretty transparent in the fact that the DNC has never been a friend to immigrants, as evidenced by the fact that most of the tools that Trump is using are things that got originally passed by democratic administrations.

Don’t expect a democratic establishment to give very many shits about immigrants because they have historically not done so. Remember when Biden was bragging about his deportation numbers? That is half the reason Trump is so committed to this shit (the other half is that Trump is a racist piece of shit, so there is that).